The 000-15S is one of the sweetest guitars on the market, but like the Baby Taylor, it's a shorter scale than I expect the Alvarez is. The neck shape is probably a big factor, too as the BT is extremely slim for an acoustic (like all Taylors) and there's something about fundamentally comfortable about the neck of a 000-15S. I have several guitars including a BT and 000-15S; the 000-15S and my Seagull Folk are my favorites for playability.