wbf1mad
Here is the one I am using (see my pictures on page 12):
ETTI @ 45A Water-cooled Brushless ESC
This is water cooled with BEC. Purchased off of Ebay for $59.00. It ships from overseas so prepare for about 10 days for delivery.
http://cgi.ebay.com/ETTI-45A-Water-c...3286.m20.l1116