Black Horse ARF
I've had 3 superairs (two crashed) and an Extra 300. Found all of them to be great intermediate flyers. Superair floats forever but is still aerobatic. Both planes are light and I used a OS 52 for the superair and OS70 for the Extra
However I must warn you about their Spitfire. Four or Five have crashed at my club due to stab flutter and in most cases the elevator parts in mid air