Yeah, the DeathAdder felt great at first but it went to shit so quickly that it made me dismiss Razer as worthless junk. The only piece of Razer hardware I've bought since was my Kitsune over a year ago. I don't know if their build quality in general has improved since my DeathAdder but the Kitsune at least seems like quality. I haven't had any issues with it. Although at that price, it better be fucking good lol.
My current build is like 90% Corsair and I've beeb pretty happy with it. The mouse I just replaced was also a Corsair but tbh I'm pretty sure a deep cleaning around the wheel with compressed air would've solved the issue. But I already wanted to change it, so it just gave me the excuse I needed.