I have the Powerlet rapid FIRe jacket liner and glove liners. I have waterproof gloves and a jacket that I like so I went with the liners. I really like them. I wore my jacket today and I was warm before I hit the end of the driveway. Here's a review.
http://www.webbikeworld.com/heated-m...ated-clothing/ I don't know that the Powerlet is any better or worse than the others. I just got a good price on it at the time.
There's reviews on the Gerbings, WarmNSafe and others on webbikeworld.
I have the wireless controller that I have velcroed under the the lip of the dash. One dial controls the jacket liner and one controls my glove liners. I also put an outlet on the dash for the power. So I plug in one wire and off I go. The biggest PITA is plugging in my gloves to the cables in the sleeves of my Jacket and then getting my overgloves on.