I bought Stitcher Express a few months ago, and it was pretty good for what it does, but it doesn't handle 16 bit color. So I've sent them two emails asking if the new version 2 does, but they have not answered at all. They sent me some promo advertising their new versions, but no answer to my questions. Does not make for confidence. So I looked elsewhere, and, for basic multi-row panos, I found a little app that does support 16 bit, is Kekus' Calico. Very nice, no nonsense, and only $39.