I think the freezer suits are great, though very bulky. I bought the pants, not the one piece set, and even so I gotta sit legs well akimbo. For the upper body I need a lot of freedom and mobility so I use a long sleave silk shirt under cotton skivey with a furlined nylon bluey jacket over the top. There is so much good thermal gear available from different sources you should have a good look around. At the motorcycle shops for example they sell great neck warmers "RJ's brand", for around $12. There a sort of sleave that you pull over your head and it sits around your neck from just under your chin on down. Little things like this really count, especially if a mild wind picks up. Fingerless gloves are a must as well as some fingered ones you can pull over the others whin it gets really cold. A wool balaclava "IRA style" is handy too. Boots are a whole post in themselves but don't overlook thermal sox. A couple of good pairs of sox will go a long way to making an ordinary pair of boots "Thermal Boots" You can never be too warm I reckon
