I vote for World Models P 51 Arf big or little. As for Kits the Topflite Jug Big or little If you build the Jug keep it light 24lb or under on the big one and 12lb or less on the little one.As for World Models P 51 arf use a 70 OS 4 stroke on the little one and a 160FX on the Big one. Ive got the WM P 51 40 size w OS 70 4 stroke and its AWSOME and flys very scale Hope this helps Lee