Comment Qt has flaws (Score 4, Informative) 331
I use QT and love it too, but it has some serious drawbacks, from my perspective. The biggest is that it requires a wonky special compilation system. You either have to use the build system they offer (qmake) or you have to manually run their generator yourself (moc - though if you were a masochist you could learn to write out the files moc makes yourself and avoid using it).
I compare every IDE to Eclipse, because that's the best IDE I've seen for any language. But I've never found that CDT, the C++ plugin for Eclipse, is any good. It fails to work out of the box for me and is a pain to configure (but I haven't tried it in a few years). QT Creator, while usable, is really an immature product. There's no support for refactoring, the UI is unintuitive and awkward (for me, at least) and there's lots of little issues with it. Plus you're committed to MingW, which can be a problem depending on what libraries you want to use. Codeblocks is a pretty good IDE, but it doesn't have a QT plugin, so you're left with the problem of dealing with moc files. Visual Studio has a plugin, but it only works with the paid versions.
All of this can be dealt with (and I do) but it's annoying.