OVERVIEW & BACKGROUNDBoth model sizes are best for: 1-2 servings; Mainly for individuals, couples, a bit more can be squeezed out of them if servings are kept smaller.Covers most cooking, even baking style options except for much higher temperature sort of cooking/baking like frying, broiling, grilling, roasting. These types of cooking methods are best done in another higher temperature (usually over1000 watts if electric powered) appliance like a regular range stove top, grill, or the portable stove tops sometimes called a hot plate.I did not just buy ONE, but TWO Black And Decker Rice Cookers-though a month apart from each other. They are the smallest (RC503) and the second smallest (RC506) models which are currently offered on their present model line up. I will discuss them both here equally in the Overview & Background section. Then in their respective individual model sections, I will discuss each one separately in far more detail. Overall, I have found them both to be so very adaptable, flexible, and meeting my food preparation and nutrition needs very well, sometimes exceeding my own wildest dreams as these cookers are definitely not a One Trick Pony. I bought them both because:-1. The huge global inflation that is causing food prices to skyrocket without an end in sight and-2. The global supply chain breakdown which has impacted, plus severely limiting, packaged frozen food for individuals and smaller groups to my local grocery stores in a dependable, predictable, and timely manner.While I usually prepare a 1 Pot meal or snacks using just one Rice Cooker at a time when cooking just for me, both of them can be used to make not only more food, but a variety of food when needed-generally one to two servings. I can feed up to about 4 servings depending on the size of the portion served separately intended for each person. These cookers take very little space either when stored or in use. They are very inexpensive (together I paid under 40 dollars for both at the time of this writing) and with the right recipes and ingredients, can do a wide variety of main and side dishes with so little clean up afterwards. When you do clean up the Inner Pot, use only soft non-abrasive sponge, rag, wet paper towels etc. or soak in soapy water before you start to wipe clean. Plus NEVER use metal utensils in these cookers or you will ruin the non-stick cooking surface. It is very easy to scratch it! Completely dry the insert itself before placing it back into the electric base.I had an unexpected side benefit of lower salt intake as well as consuming more nutritious food of grains (other than the expected rice), vegetables and controlling meat amount inclusion which helped me to lose 10-15 pounds without even knowing it! They are ultra portable and can be moved from not only from room to room, but travel if I ever do that again.I am a single person on the SNAP (food stamps) program right now. I am on a very limited food budget of hovering just under 200 dollars per month. That means I have to be very careful even before this huge inflation wave happened. While I always hunted for bargains, used store discount cards, and coupon clipped in the past, that proved not to be enough anymore, especially now with the double whammy of inflation and supply breakdown. I decided I need to eliminate food waste as close to 100% as possible. So I purchased the tiny RC503 first with my Stimulus check. I noticed such a huge drop in waste (approaching the upper 90 percentile), I decided to buy the RC506 a bit later as it is the smallest model to offer an included Steam Basket. Plus I needed a bit more “room” for a little more food. This combo proved to be the best means to reach, even exceed, my goals.***Reasons To Buy Any/All Of These Rice Cooker:s***-*Rice Cookers can be used in less than ideal situations. If you don’t have a traditional kitchen available and need to set up some sort of makeshift portable/temporary/transitory/even an emergency sort of meal prep area, station, or center, all you need is a reliable power source (preferably an electrical outlet-otherwise a generator) to power up and operate the Cooker(s). RC503 is only 200 watts, and RC506 is 300 watts. So easy on electricity unlike the higher wattage appliances out there.-*Addressing Special Dietary Issues. If you or someone in your group has a special diet be prepared just for them, it is very easy to do in a rice cooker such as these. Even if you visit outside your home or residence at someone else's place, it can be easily done right on the spot. Especially great for Diabetics, people with food allergies, personal/religious belief dietary restrictions (i.e. veganism, keeping Kosher etc.). You will still be able to dine with others without calling undue attention to the food in front of you just like everyone else.-*Faster than a “Slow” Cooker. Most meals average around 30 minutes or so.-*Not heating up the kitchen when the weather is very hot, especially hot and steamy, times of the year.-*Easy to use (only 1 Device Operating or Control Lever) and ability to prepare as simple or elaborate meals/snacks as you want.-*Cheap on the food budget without sacrificing nutrition . -*Proportion Control practiced without undercutting with a decent amount of food per person. Leftovers eliminated unless intentionally desired by the user.-*Numerous “Rice Cooker” recipes available both online, at your local public library, and in purchased cookbooks specializing in preparing raw ingredients in a rice cooker. I collected several books and searched online and I now have a huge selection of entrees to choose from. Just like eating out in a restaurant-without the cost!RC503The smallest (and cutest) model offered. It DOES NOT come with a Steamer Basket. Still it is great for very small proportions (like a side dish or a snack). I cooked white rice in it just for me and it came out perfect! Just remember to use the included rice measuring cup and the spatula/spoon/scoop included in your box for best results.The included rice measuring cup is great for rice measuring accuracy within this Rice Cooker unless otherwise specified by your chosen recipe. Then I use the regular cups used by most people.. The usual regular measuring cups might make your rice overflow as it is somewhat bigger than the included rice measuring cup.RC506This is the one size up model. I usually prepare my main 1 Pot course, a bit bulkier items (like ribs shown being prepared and served in the included photos), and could be pressed to squeeze out an extra proportion for an unexpected guest far easier than the micro mini RC503. The included Steamer Basket allows me to steam a little something extra within it without having to use my little RC503 all the time just for a very small extra amount of food. Just remember to use the spatula/spoon/scoop plus the rice measuring cup included in your box for best results.The included rice measuring cup is great for rice measuring accuracy within this Rice Cooker. . The usual regular measuring cups might make your rice overflow as it is somewhat bigger than the included rice measuring cup unless otherwise specified by your chosen recipe. Then I use the regular cups used by most people.