So at the moment I need to choose between the 3g version, the 1600 dpi optical version and the White version of the Diamondback.

Is there any major differences I should know about? Is the 3g to be prefered over the regular one and what's up with the white version?

Which mouse is the the best and with least flaws?

I'm looking for a mouse that's the size of xai with a good sensor, similar and shape and has sidebuttons.

I was looking at Diamondback 3g but they don't sell them anymore and they are really expensive on ebay.

I also need a adjustable dpi setting or it be defaulted at 1600-1800 for me to be comfortable with it. Every answer is appreciated.