I don't know if this topic has been asked before as I didn't take the time to look. Anyway it was a bit cool here in PA today reminding me of what's coming. COLD WEATHER.

My new job will have me working outdoors at times and other times right next to an open overhead door this winter. I can't wear alot of bulky clothing due to no room to work on the equiptment as it is.

Does the Under Armour line of clothing really make that much difference or should I spend my money on the old thermal underwear? I don't really like things tight against my skin like the UA line, but if it works I could probably deal with it. Any suggestions?