I'm surprised nobody mentioned emacs, I know the emacs/vim divides run deep but a lot of haskeller make do with emacs, haskell-mode contains what you ask for (shortcut to ask the type of something to ghci) and much more.
I don't dislike emacs. I'm largely ignorant of it. I just ignore it really. The first unix editor I learned to use was vi, and I've never felt the need to look elsewhere.
As I learn more languages I find that I want help with their associated libraries, more than anything. Learning a language syntax is not so hard, but it's generally not enough to create useful software. Using the language to create useful software really means knowing all about the libraries and frameworks built for use with the language.
As a haskell beginner, that's where I find I want the editor/IDE to help me out. If emacs helps me then I might just give it a try. :-)