Well,
I finally got a chance to really try the Costco winch out this past weekend. I'm quite impressed with it. It's slower than a WARN, but not unreasonably slow. I've been out with guys with the Princess Auto winches before and they were much slower and got much hotter than mine.
After pulling Kelly (Fly_Guy) out of his colossal stuck, the winch wasn't very hot, nor was is powering out. All in all, it performed very well.
$0.02
Kris