Wanted to like it
So I ordered some of these in XL and XXL - my chest is 41.5". The XL was snugger which I initially liked although the XXL also fit well. They feel great wearing under a dress shirt (I know, hold on a sec there). Then the weekend came and I wore them under a jersey while riding - not comfortable at all. They are too tight on the shoulders and neck, giving a similar sensation to bib straps that are too short. Also, the arm holes are too small - they tug at the pits when in a riding position. They wick well and dry quick when air can hit them - on the lower back under bibs though - it stayed nice and wet.
All in all, I'll stick with the LG carbon ones - much, much nicer and better overall fit (although they snag easier).