so I picked up a core4element 190 1/4 zip shirt this summer. pretty good deal on camofire, so what the hell. this is my first piece of merino clothing. anyway, I was up around 7800ft on opening morning and that shirt plus my russell primaloft jacket kept me quite warm and dry while hiking. the shirt did have a very slight itch at first, but it seemed to go away. the big problem was the nasty rash right under my chin. I did a little reading and it seems it is almost impossible to be allergic to merino, plus it was nowhere else but below my chin. anyone ever experience that? it wasn't a bad deal on the shirt, but i think i'll go with first lite for my next merino purchase.