I bought a Global Ultimate Bipe ARF a while back when they were selling for $139.95 or so. It is built nice. I haven't flown it yet.

I was going to install my Webra .50 GT in the nose, but got to looking at the instructions and the anticipated nose weight needed. They (the instructions) mentioned that some were using a Magnum .91 four-stroke and are having terrific results. So, having owned a few Magnum four-strokes previously, I ordered a Magnum .91 for it. I'm still working on the combo.

It appears to be well designed and well executed. I'm impressed. Model Airplane News has a great review online if you care to look it up. Good luck.