I love this mouse. I loved it right when I bought it during summer of 2020. The only gripe I ever had with it was the scroll wheel would seem to jump in unexpected ways.. wasn't the end of the world but mildly annoying nonetheless. So I put it up with it for a long time, all the while assuming the issue was some problem in how I configured the drivers on my machine, or a mismatch in settings I had made somewhere. Periodically, I'd try to resolve the issue but never quite got it working properly, and then I'd get busy with work and forget for another month. It wasn't until recently that I was using the mouse on another OS that I realized I was experiencing the same issue in a completely different environment with different drivers. At this point it clicked - "Wow. Maybe this has been a hardware issue all along."I immediately emailed ROCCAT and explained my situation. Knowing I was well outside of the 90 day warranty (EDIT: I thought it was 90 days at the time, it’s actually 2 or 3 years!), I simply asked them if they knew of any DIY fixes I might apply that could resolve the unintended behavior.I received a reply within 12 hours from a representative named Sascha, who was most helpful. Sascha gave me a couple of things to try, like resetting the mouse and doing a fresh firmware installation - which did actually make an improvement, it just didn't fix it entirely.Nonetheless, when I reported back to Sascha that this was the case, the next reply was an RMA number and a message saying expect to have a replacement within 14 days after my shipping notification. In reality, I received my new replacement mouse inside of a week of Sascha's last email.The fact they were so quick to do the right thing (even as I was outside my warranty window) has left an impression on me that I thought was worth writing a review for. I love this mouse on a mechanical level, an ergonomic level, and now I love it knowing the company is brand that has integrity in their customer service, and pride in their products.I will absolutely be buying from ROCCAT again, and I can honestly recommend them to anyone reading this. Thank you Sascha and ROCCAT, I appreciate you!UPDATE: I still love the mouse after another RMA. The first RMA worked flawlessly until December of 2021 when it developed the same issue the first mouse had. I emailed Sascha again in the same thread from nearly a year prior, and again the dude replied immediately. This time I thought there was no way they’d give me an RMA. I was simply asking the rep if they fixed the mechanical issue so that if I buy another one, I won’t have to worry about it. That’s how much I like this mouse - I was going to buy another after it failed with one year of use.Turns out I didn’t have to. Wherever I read the “90 day warranty” when I first was shopping for mice was wrong. It’s actually like a two or three year warranty, and so Sascha wrote me back with another RMA number without me even asking. On mouse #3 everything’s been great so far. I think they might have fixed this issue because this scroll wheel certainly feels better than the other two and Im going on a few months with it.