I need a new mouse, I currently have a Logitech G600
http://gaming.logitech.com/en-us/product/g600-mmo-gaming-mouse
I love this mouse, I absolutely love the extra ring click which I have mapped to CTRL and that's really use full to me. I can live without a 12 button number pad on the side but I prefer if it had some extra buttons. I use 3 different DPI/CPI settings the fastest one being 4800. My budget is about $50 but I can do more if its the dream mouse.
Reason I'm upgrading is because one of the buttons on this mouse requires extra pressure to work than the ones around it. and my OCD will not allow THIS! I could buy the same one on eBay and replace the button pad but if there are any other options out there with a ring click or similar then I might just get that instead.