I'm considering a new acoustic. The j15 is a beauty and is like to get one but I really have never played a Gibson I liked. At first I hated the slumped shoulder look, but it's grown on me so much I'm about to pull the trigger. I'd go try a new one at GC but my local GC is full of a bunch of burn out jerks who follow you around and hound you the minute you walk through the door. I'm wanting a warmer/less bright acoustic. I like Taylor's but they're on the bright side. Never tried the gpc4a but it was on my list too. If anyone has suggestions or experience with the j15 it'd be great to hear your thoughts. Also, the walnut back and maple neck are just gorgeous. Thanks!