My Eflite Ultimate is great as well. In fact mine will even taxi, land and take off on our grass flying field. It's much more rigid than the mono wing foamies I've seen. I love biplanes though, the Ultimate is hands down my favorite model to fly and I have 2 of them. The Eflite and a DPM Ultimate. Both fly great.

As has been said sometimes you need to sue rudder with a bipe, no big deal though. This thread is in the 3D forum so you should be comfortable with rudder use or you can't fly 3D, IMO. I also fly helis so a left stick workout is perfectly normal to me.