Logitech G300 Black/Grey 9 Buttons 1 x Wheel USB Wired Optical Gaming Mouse

Pros: Comfortable
Innovative button placement- works out perfectly for Diablo III
Tracks smoothly
Good software (Razer take note!)
No delay when switching configs on the fly
Looks cool! Sweet red / blue / green LEDs and red underside.
Lightweight (if thats your thing) and ambidextrous

Cons: Just a tad small... If i could keep the proportions exactly the same and make it about 10-20% bigger, I think that would be ideal.

Overall Review: This mouse is GREAT for Diablo III! The six skills match up perfectly with the six forward buttons, and the top middle button is a perfect bind for Use Potion.

I'm pretty picky about mice but I've been very pleased with this one. It offers a lot for the price and does everything well.

Pros: It's fast
I like the different light modes and the changeable USB polling rate.

Cons: I've had this mouse for 4 days and still trying to get used to it. I'm obviously used to a heavier mouse and larger form factor. The thumb buttons sit way too high. And the 2 buttons on the right click get in the way constantly when I'm aiming since I'm used to a larger form factor.

I just don't understand why you change a successful design like the (3) MX518's which I've used for over 7 years. The only reason I bought this was to be able to change the USB polling rate like I could in WinXP, and the increased DPI. Since I'm on Win7 now, I can't do that anymore.

Overall Review: This mouse feels cheap.

Why can't you just make the same form factor as the MX518,(weight, buttons and size) and upgrade the firmware to 2015 standards and maybe put adjustable weights in it? That might be an improvement