I also have a Saito 65 and has always run flawlessly for me. Strong puller, but I don't think I'd buy another one. It's power output is only marginally better than the Saito 56, but the 65 is based off of the larger case size and is therefore heavier than the 56. I used the 65 on a "stick" type scratch built and the only way I could get it to balance (without using a bunch of lead) was to moved two of the servos way back into the fuselage (right in front of the empennage). I'm not convinced that the 65 flew the aircraft with any more authority than the 56 would have.