Although it seems like you've all but ruled out the original post, I rather like the bamboo fabrics that I've employed from Scabal. They have a great feeling, rather cashmere-Esq and are supposed to have a decent resiliency. The fabrics are still rather new, so it is hard to say exactly how they will hold up with time, but for the prices offered you can always get two and return the worse fitting one (if JAB has a good online return policy, I dont' know but I'm sure others will)