Thanks for all your feedbacks.
Our testing results:
The first tour has about half of size of the second one but it takes about 2-3 seconds for decoding before each scene starts to play. This may vary on different computers while it takes about 0 second for the decoding in the second tour.
We presume that the first tour is better for online viewing, but you might have better experience when viewing the second tour offline. What do you think?
The quanlities of the secene in two tours are the same.
The Virual Tour Way