I was unsure of what product was best for me and upon sending an email I got a call back the same day.

I have both the "Move" and "Ultimate" base layers, I find the ultimate a little itchy - but I am very sensitive and cannot wear Merino wool so most folk probably will be fine - the Ultimate socks don't bother me at all (and work very well)

The Move base layer seems really good, very comfy and very warm - been used a lot in the recent cold spell.