If its an all day event I will bring more than one. I don't have a large hanger as I devote up to or beyond an entire season to one plane. Each new plane gets the same thorough set up period before I am comfortable with it. For the most part, its the same model on a daily basis. I guess you could say that I believe in flying one plane in an attempt to fly it well. I do enjoy the diversion of other models, but would rather work on my skills, in which consistancy helps greatly. Joe