There are pros and cons of both.... From what i have heard, there should be a lot of problems and errors in that software, even though it is quite an expensive. But you have more options to make tour tour more interactive.
The user interface in Tourweaver is not as simple as PTP, and the framerate is also lower.
If it is possible, wait and see what PTP 2.0 will bring.
I will do that for now... (but not much longer ;-)
The background is called Supersized… and the others are made up of a lot of css and jQuery media… They have over done some of it so many features are on the slow side.. They have used Colorbox which is a Lightbox copy kind fo thing..
The skills here is putting it all together… Like Henrik says.. see what ppt V2 has.