I also agree on the SIG LT planes. Started my RC life on a .25 with an OS .46 LA on it. Plenty of extra get up and go, throttles back nicely and can stay up for well over 20 minutes, and is still alot of fun to play with now that I am beyond the trainer stages.. My partner and I try to fly as close as we can to eachother in circuit with them.. if we crash, what the he!!.. more room for something else.. again, fantastic planes, both the .25 AND the .40.. Personally, I would put an OS .60 LA in the .40 size, just because I like the extra power to play with and it also gets them up on skis in bad snow alot easier..