Thanks for all the input. I have a high internal thermostat and usually ride with only a base layer, long sleeve turtle neck a Skidoo shell and Castle pants. I am looking for the loose fitting gear. I will check into all the options mentioned above.
I'll add another to the Polartec Power Grid vote, by far the best around. Under Armour base 2.0 and 3.0 are basically the same idea as mid weight and heavyweight polartec but at a higher price. Kinda like goggles I tried all kinds but still cant beat this stuff.