i had the 160 and put the 150 right back on. i may just be partial to 2 strokes, but i KNOW that my harriers and elevators are much more controllable when i use the 150. the 125 seems like it just doesn't have the punch needed for a nice pullout. im not arguing, but just stating my point of view from personal experience. (i have flown the showtime with a saito 125(a friends) saito 150, and os 160.)