My experiance was the same as Matt's
I had one of the early ones with no break in instructions. It was junk in a couple weeks. And that was on only a 6x4 prop and 8 cells.
Brushless can last nearly forever! Try a Mega 16/15/X you will love it. Or if you need a geared motor the Himax might do well. ( I have one ordered and can't vouch for it yet)
Wattage super Cobalt plus gear drive $66.98
Himax with gear drive $79. 95 (Well worth the extra $)
Himax HA2025-4243 & Phoenix 25 ESC $139.95
http://www.toddsmodels.com/brushlessmotors.htm