I already own a Four Star .40 but Im thinking about stepping it up to the Somethin Extra, GP Revolver, or U Can Do 3D, so I just wanted to know how these planes compare. Here's what Im looking for, (1)speed-I like doing fast low fly-by's. (2)Axial Rolls-all the planes Ive owned so far have dihedral in the wings. (3)Good knife-edge-Can hold knife edge with capability of slight climb. (4) Good inverted flight-love flying upside down and want to be able to pull up without having to roll it over(Four Star had good inverted flight characteristics) (5)Good entry level 3D plane.