I'll never have a street bike without heated grips again. JSNS
I've been a Tourmaster fan for a while, and have (unfortunately) crash tested their gear and was quite pleased with its performance. I have never considered them to be inferior to First Gear or Gerbing. I bought the Tourmaster Synergy 2.0 about 5-ish years and 75,000 miles ago and so far, so good. Admittedly, I don't have to wear it as much as others, as things don't get as cold in the south. I picked the T/M because:
1. As Gurock points out, it has insulation in it that serves as a regular fairly warm wind breaker jacket at the campground and for walking around. One less thing to pack.
2. The controller is really simple - basic rheostat design. Draws a bit more power (of which the FJR has plenty to spare) but no fancy electronic printed circuit boards to go bad. And it comes with a dual controller, so if one side craps out, I've got a spare to use on the road.
3. I got it on sale at New enough for something stupid like $100.00 including the coupon I had at the time.
I do wish that I bought one size smaller, though. It fits fine in the chest, but not tight enough in the abdomen area. In order for the liner to be effective when heated, it has to be snug. I fixed it with safety pins, but one size smaller would have worked better. Ironically, by the time I'm almost home after a two week tour, it starts to fit much better!!! (Beer is good)