Plusses: looks cool if you like the 2 wing look. Minuses: you must pay very close attention to the orientation of the plane. The 2 wings don't make it easy to figure out if the plane is inverted or not. Most biplanes also have smaller wings which makes the situation worse. The set up time is at double at the field because you have 2 wings to install instead of 1. You also need more time at the end of the flying day. You have 2 wings to remove and then 2 wings to clean the fuel gunk off instead of 1. for the trouble I would rather just fly 2 different planes. [8D]