I know you said 2-stroke options, but...um....why? Is it because of cost, or cowl concerns?

Bottom line for me is...shoe-horn in as much power as the plane will take. Not because it's cool, but because you will have more options when you are done with the airframe. If you decide to put that engine into another plane, you can move up.

For in-cowl, scale sounding engines, look at RCV engines. They are an engineer's dream.

For lower cost standard 4-strokes, look at Magnum....except for the Magnum .70.

For 2-strokes, O.S. AX/FX

For High-end standard 4-strokes, Saito or YS.

There really are no 'BAD' engines, but there are some that are better and you normally pay for it. My favorite glow engine to date is the Saito 1.25, my favorite 2-stroke glow is the OS .46 AX and my favorite gas engine is the DA 100.......oh, and, (while I'm off topic anyway), my favorite electric brushless motors are Hacker.