I can tell you from personal experience that the Goldberg Model 12 Monster is a sweet flying Pitts. And, it's durable, also. I've put mine in once due to a radio hit, and the damage was pretty minimal considering how hard it hit the ground. I've got an OS 1.60 FX engine on mine, and it has plenty of power to spare. There a large build thread on this plane in this section that's got a lot of information. I've only seen one of the Cermark Pitts, and it flew well, but I think the Goldberg presents better, as it is a tad larger. Plus, it doesnt look like every other Pitts at the field. Flying wise, well, it's a Pitts. Keep the speed up on approach, because it will fall out of the sky if you dont. If you deadstick (with either one), all I can say is point the nose down and hope you are close to the runway or a decent soft spot, because she WILL come down in a hurry. You just have to remember they are both Pitts, and they fly differently. The other thing is, if you are thinking of putting a gasser on the Goldberg, be prepared to do some surgery to put the elevator and rudder servos in the tail, because it will build nose heavy with a gas engine. I dont think you would go wrong with either one of these planes, but I am partial to the Model 12, just because it's different. If I had $180,000 to blow on a toy, I'd have a real one sitting in my hangar.