I flew my UCD 46 with a YS 63 and a OS91 FS. I liked the 91 a little better. Both have enough power. My UCD 46 weighs about 6 lbs. I don't call that a light-weight. It weighs about the same as a Mojo 60 and has the same wing area. The Mojo 60 flies better for me, especially the Moass version.