RE: Intermediate plane/trainer
Just remember when looking at a second model Thank of a shoulder wing type plane with a little bit of Dihedral.
The shoulder wing keeps the plane center of mass below the wings. This will make them more stable as you learn to fly more aerobatic maneuver.
I like love any of the Stick type planes
Also one that I enjoy as everyday flyer is the Mustang PTS from Hanger 9. Throw way the droops and landing gear spats. Then change that 3 blade prop in for a 2 blade 10-7 and have a good time.