I am on the graphics chapter of my C++ book. The author recommends FLTK for the GUI. Are the ones you mentioned good for beginners? Are they compatible with the VC++ IDE? I would like an extremely user friendly GUI so that I can concentrate on the C++ code rather than getting the GUI to install and work correctly.
SFML (from what I've skimmed) is very user friendly (as far as libs go). The one thing you may have trouble with is installing and setting up but most people would tell you it is worth it. I have used SDL which is quite easy to setup, but most of the function calls are clumsy or have odd syntax. SFML is great for everyone.
Oh, and yes, as far as I've heard you can use SFML fine with VC++.