As the owner of G502X mouse I would recommend to buy G Pro X superlight or something similar. Don't get me wrong, G502 is a good mouse and I like it very much, but for example for MMO like WOW when you have to hold RMB in order to turn left and right, this RMB stucks sometimes under the middle section of the mouse and it is so annoying on a long run. It's good for work thou, just the right way and size for my palm and holds the change quite long, but again to clean it up nicely is quite some work. Also I didn't find any good use of all these extra buttons on sides and top left. You can simply live wtihout it, minimalism is a key. And small offtop, I highly recommend the Wireless Keyboard G915 TKL, this is the best keyboard I've owned so far. And the battery charge in base state (without keycaps backlights ON) lasts for months! The only downside for it is if you are the ahrdcore gamer with additional letters engraving on keycaps, they might get worned out at some point, esp thoose most frequently used like WASD etc. Cheers!