NVIDIA continue to bring it with new driver releases and as we mentioned in the introduction, while they're not as common as AMD ones, they tend to always yield not only the standard bug fixes, but also some nice performance gains; something that's not as common when it comes to AMD drivers. Yes, they get performance gains, but quite often not as clear, and not as across the board as NVIDIA with its driver releases.
The other thing to remember is that NVIDIA do release drivers on a regular basis in beta stage through their website; they just don't offer official WHQL drivers on a monthly basis, something that some people simply don't care about. If there's a major bug in a game, NVIDIA can often bring a driver as quickly as AMD can who often offer non WHQL updates.
The new interface on the install is really nice; it's a bit like a cleaner version of the AMD one which is quite messy. Tacky ads for games and the inclusion of annoying things like trials for MMO games make it quite cluttered. On the first page you can see the menu you get after selecting the Expert installation and it's just very precise and easy to use.
It's good to see NVIDIA finally throw some makeup on the old installation process and bring it into 2010 and beyond.
Finally, as to if you should be upgrading or not, if you're a GTX 480 user, for sure. And really, if you're a GTX 460 one, yes as well. While the latter might not see the strongest gains when compared to the GTX 480, across the board there's some nice performance increases and in the situation where we saw performance take a little hit for some reason, it's nothing that's going to change your overall game experience in a negative way.
Of course, if you haven't looked already, the GTS 450 Super OC from Galaxy we tested also compared the original driver that came with the card to the new 260.52 one, so if you want to see how that model likes the new driver suite, I would recommend that you check out the review.