i'm the fucking master of this shit
A&E size L is tight on me but doesn't have a nice V-taper. This is their vintage fit. Doesn't make sense to make a shirt small around the shoulders/back/chest yet have it bow out around the bottom. They might have different cuts.
If you want form fitting and a good V, go with A&F. Shit will snug your upper body but the length will be perfect. XL is perfect on me...the muscle fit.
More expensive brands, forget it. Every one of them is a shot in the dark. M, L perfect length, too fuggin tight. XL, perfect fit, too long. Kill me. I'm like a bitch when I try on clothes.
Let's not even get into jeans.