I'm quickly becoming a Photosynth addict. I could create these all day long.
I love to take pictures and video but the immersiveness of these are something that I really like.
I created these all on my iPhone 4 or iPhone 4s (anything after Oct. 14, 2011 would be on the 4s) and if(?) they are of higher quality, I can't really see any large significance, the file sizes aren't any larger nor does it appear to let me take less pictures to create the Photosynth (that would have been nice!).