I am REALLY enjoying my Smartwool longsleeved soft merino pullovers from TE. I love both the "Zip-T" and the crew neck. They keep me warm and cozy but they are lightweight, they BREATHE, and they never feel sweaty.
Yesterday we did a pre-dusk ride with the temps in the 60's and shady dirt roads with some fast windy downhills, and my Zip-T was just perfect under a simple light polar fleece vest. After I warmed up I took off the vest and the pullover felt just great by itself.