I rode with the kanetsu vest for several years supported by heated grips.
Great product and works well ... however ... I have switched to gerbings
jacket liner and heated gloves.  I have found this to offer much greater
comfort and flexibility.  Get a pair of heated socks and you are good to go
in all day comfort in all but the coldest weather.

For face shield fogging try Respro Foggy mask.

http://www.kneedraggers.com/details/Respro_Foggy_Mask--502324.html

Oh, goody! I just saw this on one of the other lists I read. A battery
operated vest from a world renowned motorcycle accessories reseller:

http://tinyurl.com/2yqpgf
 

 The new Gen III heated liner from WnS has a wind-stopping micro-> fiber built in. One less layer to carry and don roadside.

GZ

 http://www.warmnsafe.com/
 

My old TourMaster is wearing out and it's time for a new jacket and I thought I'd splurge.
I've read the Darien vs. RoadCrafter write-up in the Aerostich catalog (several times), and I'm still confused. What's the difference between the two?
Besides protection, I'm primarily interested in warmth! (Here in central PA you spend far more time during the year worrying about fighting the cold  than you do about fighting heat). Is there a difference between the two in that respect?

Darien is longer than the Roadcrafter and has a different collar. Darien is 'Waterproof' with Goretex and sealed seams, RoadCrafter is 'Water Resistant', but still has Goretex and sealed seams, (something to do with stiching issues).

Roadcrafter is designed to be fully zipped to the pants if you choose, turning two pieces into a one-piece riding suit.

Darien is not designed to be zipped to pants at all, not even having a small zipper to mate to pants.

Some differences in pockets as well.  Both have armor and provisions for back protectors or pads offered from Aerostich, (and others).
Both have excellent venting, IMHO

The Darien offers zip in liners of different types, including an electric one direct from Aerostich. If it's warmth you want, stop looking at jackets for the warmth part, electric clothing is the only way to go in this regard. Choose a jacket for it's protection from water and pavement, then add the electric liner that meets your needs best to keep you warm.

http://www.warmnsafe.com/  For excellent heat controllers, and a very nice line of heated clothing.

http://www.digitalprovisions.com/Merchant2/merchant.mv?Screen=CTGY&Store_Code=FARKLEMASTER&Category_Code=HEATED

A good source for the top products too.

http://www.gerbing.com/  Good products and excellent customer service, a little more bulky than the others, but time proven and some advantages over the others depending on your use. Their controllers are copies of the Warm-n-safe design, and while they do work, they are
not of the same generation or constantly improving as the Warm-n-Safe designs are.
 

I have a Darien jacket and zip my Gerbing liner into it.  Bulkier than I'd like, and if doing again now I'd seriously look at the Warm-n-Safe clothing for my personal needs.  I prefer a jacket liner, as opposed to a vest.  Just my needs, if I'm cold, my arms are cold too. Vests have never done it for me, though they do the job nicely for many.

The Darien is not a total wind blocking design.  (I believe the Roadcrafter is similar, but don't know for sure.)  It bleeds wind at the zippers and with out a wind proof liner in cooler weather, you'll notice the draft.  I've not had any water leakage issues with mine at all, so just air leakage. The Gerbing liner has a windproof shell, (on the version I chose), which works well in my combination.  Often I don't need the electrics, just use the liner as insulation and wind break.

I doubt either is designed for "warmth".  Certainly the Roadcrafter isn't.
For warmth, electrics are the answer, imho.  The Roadcrafter certainly is one of the more protective outfits, fits more trimly than the Darien and also isn't as weather tight as the Darien according to the popular discussions.

I believe that Gerbings is making a complete outfit that is interesting if warmth is your primary objective.

Rusty

LDRider is a Service Mark, owned by Joe Denton, 1996, California