i've also been researching for chorus pedal last 2 weeks.
MXR stereo chorus = looks and also sounds cool, but the 18v power is holding me from it :/
Carl Martin and Markbass = i havn't tried, the local store are out of stock
EBS unichorus = sounded alright but i wanted to tweak it a little more, few controls.
BOSS CEB-3 = i'm on my to try that one (maybe the digitech bass chorus while i'm there)
T-rex the Sweeper = this pedal is in my 1st place atm
I would be glad to hear your view of some others or these