well i think of the 26gx with out pipe close to the same power as the OS 120 ax with pipe close to the 1.60 power.
the 35 close to the 1.6 stock muffler but the pipe really helps.


also I think the 26GX is close in weight to the 1.6 and the 35 is more than the a moki 2.10.

I would look at the type of flying you want to do and your skills. then look at the wing area and weight of the plane. I tend to go by 1000 sq" plane should be less than 9lbs for good 3D 1100sq" should be 10lbs or less for good 3D. the lighter the better with enough power to hover at 1/2 or less.

What is the weight and wing area of this plane?