Hey Skip, if you're talking about the Goldberg 30%, I've been flying mine for a month or so. I started with a Fox 4.2 in mine and have since replaced it with a Brison 4.2 which has a MUCH smoother idle. The plane is a FINE quality ARF, although there is some re-engineering needed to get more throw on the elevators. I also had a few minor issues like a missing axle and mis-labeled interplane struts, but overall, it is a great kit. I'm still not quite sure it's worth $850, but it is a great building and flying plane either way. The flight characteristics are just like you'd expect if you've flown the smaller Dave Patrick Ultimate or even the small Goldberg model. This one flies just the same, only BIGGER! The roll rate is out of this world, and I was surprised how light the plane came out. The wing loading is so low that the plane just floats forever and is actually fairly hard to slow down for landing--it just wants to keep flying! The Brison 4.2 gives great performance with strong vertical and it will pull it all the way through a knife-edge loop as well. I love the plane, but I just think the selling price is a bit high for this size aircraft. Let me know if you have any questions!
Ron G.

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