4 stroke is better for "3D and prop hanging" and better throttle response. I am done buying 2 strokes (ok except maybe for a piped OS 140RX, but only if the price is right).

Even though there is less top-end power, there is SO much more torque. You can use a higher pitched prop to gain the speed. The high power of 2 strokes only comes at high RPM, so either you're hovering at high throttle settings or you're revving up your engine going into aerobatic maneuvers. Either way you're making a bunch of noise and giving up throttle response, accuracy, and making more noise with a 2 stroke.

I have a large-ish plane that I had a 120AX in, at 3.5HP. I switched to a YS 1.10 with only 2.5HP, but am getting WAY better aerobatic performance out of, due to the amount of torque. As soon as you hit the throttle, the power is there - immediately. I went from a 15x8 and a 16x8 on the 2 stroke to a 15x10 on the 4 stroke, and found that I needed much less throttle to fly the plane - making less noise, leaving more power in reserve for verticals, etc.

Just my experience and opinion.