I have the Smitty series 1. It is slow, but has never stalled. I've never had an issue with the remote either. I've had about 4 or 5 easy recoveries and 3 or 4 hard pulls with it. No worries at all.
The 4.1hp motor is the 8K rated winch. The 5.5hp is 10K rated.
the cheapest place I found was www.winchdepot.com