RE: Does size matter?
I have a Tiger Trainer 60. It flies great, lands great, But...... I had an unfortunate accident (Screw up) with it and Have attempted to find the replacement Plastic for the Fuselage.
My Recommendation would be to get a all balsa plane so repairs are easier (possible). A buddy of mine has the LT-40 and I have flown it. The plane is a better choice in my opinion. The only thing that is better with the Tiger trainer is flying in the wind. 15 mph isn't bad with the Tiger. But it is interesting with the LT-40.
My vote is for the LT-40.
Hope this helps.
Del