Hey itskub, I usually get the dress shirts (for me, 15.5 34-35). But I wonder if that's going to be long enough for you, at 6'3". I've had good luck finding them at Bloomingdale's in the $50 - 75 range, although the solid white and solid blue usually get snapped up right away when they go on sale. If Theory doesn't have a long enough sleeve, you might want to try Z Zegna dress shirts. They go on sale at Bloomingdale's fairly regularly, they have a pretty good slim fit, and the sleeves are longer. In fact, I can't wear them because they're too long.