Not to complicate things too much but there is another option. I ran into a Helly Hansen rep. friend of mine the other day and she was kind enough to set me up with their latest hybrid baselayer tops.
It is sold as HH Warm - and their write up is this combines LIFA� T3 hollow fiber technology with merino wool to deliver exceptional warmth and moisture moving management at a minimal weight.
While I have been loving the all wool stuff lately I am always trying new gear out. This is much more comfortable then any other synthetic I have tried and the combination with the wool is a noticeable improvement. I tried a earlier version of this a few years ago and it was functional but not as comfortable. They have since refined it and it has a much softer feel and the function is impressive. Just thought I'd toss that option out there.
