Better than 1? I have the first 3DVision and use it on a 570, but have used it since the SLI 8800 GTX and SLI GTX 260 days, so it's technically "old" but I still use it with newer games like Skyrim. Reviews sound about the same as the issues I have with the OSD, darkness, etc., but I really enjoy it overall.
I guess my question is, has anybody who has used the first and second "generations" found a significant difference with the new model to justify reinvesting, or should I stick with what I have? I know what NVidia thinks :)