Jet, I've only got version 2. I couldn't see any real difference other than one special texture, and the second one was more flexable and had more posing abilities. There's only so many of these you really need. Right now I've got the two mentioned above, a couple of more (not very good ones), and even 3 or 4 for robots. I've also got one or two specialized static ones for a very realistic effect. Those aren't posable though, just very detailed. The robot ones are sorta neat, but there isn't that many good renders you can do with them. At least and not violate the TOS.