A lot of the gaming mice depends greatly on a user, and hand style they have.
For me personally I like much larger mice than normal as I have a Palm style: where the rear of the mouse sits in the "palm" of my hand and my fingers will "rest of the button in a relaxed state. There are many other styles like claw and so forth.
Currently I have a 16kdpi optical mouse with the sensitivity up all the way I can "
" and be on the other side of the monitor. Personally I love razer(razerzone.com) their mice imo are amoung the top in the world. I have been through Roccat, Logitech, and a couple of others. Logitech has a solid brands from wireless to their G-Series mice.
But the real questions wouldn't lay with brand but your personal preference and opinion. (Some copied from link)
What hand style do you have?
Do you like a certain thing on a mouse? (Eg: Macro buttons)?
Shape (Personal Preference)?
Size (Personal Preference)?
Weight (Personal Preference)?
Build Quality?
RMA Support?
Perfect Control Speed/Malfunction Speed?
Sensor Position(usualy preffered to be center)?
Price (DUHHHHH)?
The mouse I fell in love with a long time ago was the Razer diamondback, and only recently have they brought it back. and I love it.