Is there a mouse similar in size and shape to the Zowie EC1-A but with a re-bindable DPI button?

[viivo]

I've become accustomed to binding that button to ALT which allows me to double my hotkeys without needing to move either hand which is very useful in MMOs with tons of spells/skills.

Weight and sensor aren't a huge deal, but the shape is most important for comfort over long sessions. Currently using a Rival 310 which, while nice, is too short length-wise for me to use comfortably.