I finally have a good comparison for this topic. I was at my local shop yesterday and looked at the new Nike crews. The power crew was exactly what I like, a nice light waffle knit shirt that will easily wick perspiration. The advantage crew was just the opposite, more of a smooth knit that will stick to your body like plastic wrap when you sweat. I suppose I could complain about the inconsistency in these designs, but they may be intended. Anyway, it makes buying shirts online kind of difficult. If anyone has similar feedback on other companies' shirts, post it here. I know my Fila polyester shirts are all over the map. I have one or two just like the Nike power crew and one or two that don't breathe at at all.