will mice make difference?

Im currently using g304, and im planning to get a new mouse. but im not sure if i should buy a new 304 or an expensive gaming mouse

Unless it's much heavier or lighter, then no

Or you could be TenZ

304 should be just fine provided you have a good mousepad

G403>>>>>

ive heard the tenz mouse does wonders for iron 1 players like urself

I'm content with my g304

It's really good mouse but if you planning to buy
Then go with super light or viper
But really good mouse pad also mandatory your flick control and glide depend upon it

It won't make much of a difference unless you are really uncomfortable with your current mice.