Medium Men's Crew - fits great. I thought it was a bit loose but I realized that if I went any smaller, it would be a super tight tee and that's not what I want in a casual shirt
Small Oxford - I have a 39" chest, 17" shoulders in front, 18" in the rear. I really am digging the fit. I do think they are accurate in describing it as super fitted. My shoulders are perfect. The arms are TOO long. I am glad the waist flares since my hip/waist is a bit wide (33" waist). I think if it didn't flare, it might be too tight for me at the bottom (not sure). Anyway, I am really happy with it.
I wonder how we'll be able to tell which ones are made in the US and which are Chinese made?