I hate to say it, but do a search.
There have been some long discussions and suggestions Pro/Cons of different manufactures.
A straight plug to power is all you need, as you don't leave the heated gear turned on left on the bike without you.
If I was paying full price, I wouldn't buy Gerbing. But there was a recent post about 3 weeks ago about a place selling their stock at $50 ea piece. That's about 1/3 the cost, and 1/5 from MSRP. I bought another jacket liner and controller for myself. I bought my Gerbing about 8 yrs ago at a premium, when they offered lifetime warranty, which they have now cancelled.
Oups, it was posted in the general forum. Maybe look at the whole site for heated gear. Here's the one on sale (was).
http://www.valkyrieforum.com/bbs/index.php/topic,104090.msg1041479.html#msg1041479