Unfortunately I can't try out the free trial because it'll make me uninstall CS2 first, which, for reasons I won't get into here is a pain in the butt to re-install.

I do plan to get into more photo-manipulation and stuff like that, and from what I've seen of the features on CS5, it looks as though it might be worth it. I just wondered if anyone who's used both had any comments.

Well, at the very least, even if I don't get it, I'll still be saving money every month for it, which is never a bad thing (saving up money, that is).