Yes, T2 UE did first come out as a double sided double layered disc. Apparently, it was originally intended to be
all double sided discs. But the initial orders for the DVD was so huge that the factories that could produce these double sided discs couldn't cope, so they had a different version made, this time with 2 single sided double layered discs. That was because there were more factories that could produce it, at least at the time. So when it first came out, there were indeed 2 different versions of it, but aside from the difference in number of discs, there were no real differences between the two. So no version is really better than the other. But I do prefer the 2 disc version which I got.
![Smiley :)](http://www.pinoydvd.com/Smileys/default/smiley.gif)