Have you Guys seen the new pano projections that Max Lyons is about to include in the upcoming new version of PTAssembler.

They solve so many distortion problems,they just about blew my mind away.
You can see his examples here....

http://www.tawbaware.com/forum2/viewtopic.php?t=5290
http://www.tawbaware.com/forum2/viewtopic.php?t=5293
http://www.tawbaware.com/forum2/viewtopic.php?t=5295
http://www.tawbaware.com/forum2/viewtopic.php?t=5297