Hello; I do agree that a poorly set up bipe will be harder to fly then a well set up monoplane, but I like biplanes and a well set up biplane is no harder to fly then a well set up monoplane. If the bipe has two different wing incidences, it is hard to detect, but will not fly properly. A biplane will have shorter wings for it's size, so it will roll quicker, or at least appear to roll quicker. I wouldn't reject a plane because it is a biplane, just make sure all the incidences are right, and you'll be okay.