I really like these shirts, not only are they unshrinkable, but they are amply sized and comfortable. They also hold their color well and resist the kind of wrinkling that makes you want to iron it out. I also get told that they look good on me, more than most shirts that I wear. I am between a 2x and 3x, but usually a 3x. I wear them under a sports jacket, or just over my pants and am always comfortable in them.
I recently bought one of LL Bean's unshrinkable long-sleeve t-shirts. The shirt fits great and is very comfortable. The fabric is soft and moves well. The neck is a little larger than I like, but all in all, it's a great shirt.