. . . Some reasons for my choice of wool are it doesn't stink as synthetics like polyester or polypropylene and it doesn't melt to the skin...
I like both wool and synthetics. Polypro did take on odors and it seemed they were there for good. Coolmax doesn't seem to have that problem and as for melting, another option worth consideration is
Massif. Their Nomex Hotjohns work great as a base layer. They don't seem to have that odor problem either. Pricey, but good stuff. I keep their FIRELITE PULLOVER in my flight bag.