Let me tell you that as a user of both mice i have to say go with a razer mamba
im also using a razer Sphex gaming skin ^.^
best mouse + mat ive ever had.
because the catch is when ur using wireless u need to be able to STILL USE YOUR COMP. while its battery is low. Hence the Mamba. I also have to say that ive drooled quite a lot of saliva after the MX Rev. and it is an extraordinary mouse with more buttons that can be programmed.
However the mamba is a hybrid mouse and the mx rev.'s batt. life is quite horrible. (also it gets scratched way too easily and leaves marks that cannot be repaired easily)
the mamba on the otherhand gives all those and a bag of chips with 1 ms reaction time and über polling rates. ( which is crucial in my part )
I'm not sure what youre asking but if my hands were a little smaller and if i was a constant laptop user as opposed to a hardcore desktop fan, i would go with the Razer Orochi.
Not only is it bluetooth (which means no dongles or whatever) its almost exactly the same as the razer mamba ( i use 2000 dpi at most with my mamba and i have dual monitors which is what the orochi is supplying you ).
on the plus side the orochi is CHEAPER than both the mx rev. & Mamba.
but if you have a desktop and want to use an epic mouse go with the mamba.
also when im on my laptop i use my iphone as a mouse

i dont know if that counts also but hey...