Gerbings +111
The Gerbings gear can all be routed through the jacket so you only have to connect a single lead to the bike. I've replaced the canbus socket with a Powerlet direct to the battery so all the gear works.
Here's a tip list:
Body:
Go for the full jacket over the waistcoat, you'll be very aware of cold arms when its <5deg and the air is blowing straight onto unheated parts of you.
Body Still cold?:
Get a bigger screen.
Body Still cold?:
Gaucho.
Hands:
Muffs and heated grips with any glove you like, heated if you've got really cold hands!
No muffs? - Heated gloves; the Gerbing ones are leather, waterproof and warm without the bulk of a winter glove.
Feet:
Heated soles from Gerbings. When its under a few degrees and you're spending over 2 hrs travelling at 70mph+ your feet get cold and never recover. These heated soles work (they do get hot, not just warm) and can be cleaned with water. Having heated soles means you can wear thin socks and leave those thick walking socks in the drawer.
Avoid:
Exo2 Heated Soles: Cannot be wired to the bike's battery, use stupid rechargeable batteries. Also your feet sweat, the soles over time will become soggy and rotten. Waste of money a real load of rubbish.
2nd hand Widder kit; mainly the gloves. They're not waterproof you will get wet hands its a design feature.
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Lastly, Gerbings gear/leads all have no quibble lifetime warranties which they honour without any sob stories requiring prams and toys IME.
I don't work for Gerbings but I've used their gear for over 50K miles and its easily the best heated gear; I've done: Klan, Widder, Exo2 stuff over the years and they don't come close.
Note that Widder no longer trade.