None of them. Model 1927KW is what I've seen some people use. I've got a pair, and they are decent, but have the cloth back.
The best one, imo, is 901-M, which can be found here:
They are all leather, and much warmer than you would think. I bought a pair of each glove I mentioned here this past winter from the site I listed, and swear by the 901-M. Make sure to put some waterproofing on it. I picked up some SnoSeal (made from beeswax) at the local camping store (Don Gleasons in Northampton, MA), but supposedly any leather sealer will work.