I had the g502 original for 1,5 years but in august i got a g403 wireless. I have had 0 problems with them, if anything the g502 was a bit heavier but thats all i could complain about it. Now that i have the G403 i cant recommend the G502 anymore, simply because the g403 is so much lighter and my aim improved alot in CS and other games in general, 10/10 would recommend G403