IMO

I have a nasty little secret: I still do a lot of coding using vi (well, actually vim). When I need or want something more "robust" then I'll use BBEdit. If I need something even better, then I'll use Xcode (see a pattern there?). I do find myself selecting Xcode more and more, BBEdit a bit more, and vim a bit less as time goes on. Mostly, of course, it's due to the wide-ranging complexity of multi-file projects and applications, and the old methods just don't scale anymore. I hardly ever use Eclipse: Xcode is much nicer, IMO, but I expect to find myself eventually moving more to it, simply for the cross-platform aspects. And I've never used emacs. There. I said it.