My experience with Calwell Massey was a bad one. It was tough for me to get a good stiff lather with, and this seemed to be the consensus around this forum as well. I'd say for the cold months, either soaps or creams will work. Creams have a reputation for moisturizing properties, but I've recently been using Kent soap (rebranded Mitchell's wool fat) that has lanolin in it. This stuff sometimes has a learning curve for building lather, but if you can do it with your Williams, I doubt you'll have a problem with the Kent/Mitchells. The Lanolin is really an amazing moisturizer, and leaves my face feeling like aftershave is almost unnecessary. Check out Kentbrushes ebay store, or simply search for Kent shaving soap on ebay. The wooden bowl it comes in is rather cheesy. The soap however, is fantastic.

Cheers,
Landis