Hey, guys now that i have started the this hobby my friend has become interested in learning to fly an rc airplane. He has found couple trainers that he likes but recently asked me which one would be best. Since, I just started the hobby couple months ago i figured I would turn to you guys for some more advise!
The planes that he is really interested in are:

Dynam Hawk Sky
Mini Apprentice s
Freewing Pandora
HobbyZone champ s+
HobbyZone sport cub s
FMS Easy Trainer

I know these are a lot of planes to look at, but he would really like to know which ones are worth looking at and which ones are worth the extra money over the others. He is also curious how much space is required to fly the larger aircraft in this list. Lastly, keep in mind that his end goal is to be able to fly a war bird as cost effectively as possible and is curious which plane will best prepare him at the lowest cost!! Thanks for your help!