Save Phace for those really cold mornings, other wise, some goggles and a balaclava. I can stand the cold, but my eyes watering almost blinds me. Under Armor makes a really good balaclava... warm and almost windproof.
I don't use either. I use a hood like the NFL players use and wear my costas when running in the cold. But I'm kind of a sissy and won't go fishing unless it is in upper 20s heading for upper 30s or warmer.
I changed to save phace from helmet after coming across Rayburn during a bass champs tourn last year as a passenger. I felt like a bobble doll with my head going every which way from the waves. After the third time I felt it pop I took it off and almost threw it over board. Had problems with Neva pain for months after that.
A helmet is really nice when it's cold but when running on a crowded lake you really need to at least hear whats going on around you. You can barely if at all hear your partner if he sees anything. I switched over to a Save-Phace a few years ago and love it. I first started using it in a much colder climate then and it worked great.