I have trained people on the Alpha and the LT-40. The LT-40 is more docile, more stable, and larger, making it easier to see. The Alpha will do more aerobatic maneuvers once you're soloed.

In either case, I'd go with the ARF, not the RTF version. Spend a few $ more to get a 6 channel computer radio with a synthesized module, and you'll be set with a transmitter for your next 8 planes.

And don't bother with the 40 LA. For the same money, you can get a Thunder Tiger Pro 46 which is a fabulous engine on any of those trainers (all the reliability of the OS for about 2/3 the cost.

Don't think of it as money spent. Think of it as an up front investment. In this hobby, VALUE is what counts, not COST. Why spend $60 on an engine that you'll get bored with (the 40 LA) when you can spend $80-$100 on an engine that will be ready to move onto your second, third, or fourth plane. Same with the radio gear.

Brad