RE: What Planes are good?
Oh boy.. you opened the proverbial can of worms....
First off.. RC airplanes isn't cheap. Or at least.. it depends on what your view of "cheap" is.
You might want to look into one of the foamy RTF trainers... You could get in the air for less then $200.00. (I'd recommend a spare battery or two)
The Hobbyzone Super Cub is a nice little RTF.