I just got an anti-glare MBP and like it a lot. I have always found the glare annoying on the glossy screens and have found that the glare is noticeable in not just direct sunlight conditions. For my needs, I've found that the anti-glare is just as nice as the glossy without the glare. And the screen on my AG MBP sure is beautiful 🙂
However, it depends somewhat on usage. I'm not primarily using my laptop to watch movies or look at color pictures, so the benefits of a glossy screen are significantly reduced.
As you can see from this thread, not everyone shares my view, so you should really just go to an Apple store and decide for yourself.
EDIT: Oh. And another benefit for the AG screen is the silver bezel. For some reason, I prefer that to the black surround of the glossy screen.