Are you dead-set on Razer? I loved my Razer mice, but found the software a bit lackluster and they all suffered the same long-term issues. Then Cold Storm gave me his Cyborg RAT7 because he couldn't get comfortable with it and I was absolutely blown away by it. Once I found a comfortable combination of the included finger- and palm-rests and adjusted the weight and dimensions to my liking, it's the best damn mouse I've ever used, software included, and it's 5600dpi to boot(there's a newer revision with a 6400dpi sensor called the RAT7 Infection).
The RAT7 doesn't have any of the long-term issues I dealt with with my Razer mice, such as needing a recable after a year or so due to a super-thin cable fraying or the rubberized coating coming off of the mouse. Literally, the only two issues the RAT7 has developed are extremely minor: the clear-coat over the Cyborg logo on the thumb rest rubbed off and the little crosshair logo has faded a bit from the precision button(but it's the only red button on the mouse, so that doesn't matter). Big deal, I've been using this mouse heavily for 18 months or so and haven't had a single hiccup or issue that needed repairing unlike with the Razers, or the Kone+ which needed a piece removed
because the 'click' from the scroll-wheel was just too damn loud, even after a month and a half of use.
Keep in mind I'm stacking this up against the Razer Copperhead, Naga, and Mamba, the Roccat Kone+, the CM Storm Sentinel Advance and probably a few others I can't remember(I know there were two high-end Logitechs in there somewhere...). Coming up second favourite in all of those is the Copperhead(very outdated now, though
) followed closely by the Kone+, and the Kone+ has programmable lighting(so you can colour-match it to your pc
Then again, the shape of the RAT isn't for everyone. I prefer to "palm" my mice when playing, so if you like to "claw," I have no input for you.
Sorry if this seems off-topic, just trying to give some feedback on mice so you don't end up with a turd
Don't get me wrong, I'm not talking bad about Razer, Roccat, or CM, just stating that of all of those mice, the RAT came out ahead by a large margin in build quality and comfort(at least for me)
TL;DR: Here's to hoping you find yourself a mouse that suits your needs and wants
I know how tough it can be to find one you like nowadays with everybody and their mother making "gaming" mice.