Has anyone here tried out Polartec 100, 200 and 300? I was wondering which type would be best to have in April on the chillier, southern part of the AT. Would I need the same type (ie: 100) for both top and bottom, or would I need more or less insulation for my legs? I've heard that people generally tend to need less on the bottom, but I just wanted to check. Thanks! Slainte, Cindi