While I really like my two UCD 60's I believe that the UCD 46 is a better 3D flier and I'm wondering if anyone else who has flown both planes has the same impression.
At a glance they look the same but if you examine the picture closely you can see that the UCD 60 has it's stabilizer near the top of the fuselage and the UCD 46's stabilizer is lower and farther back on the fuselage. You can easily see the difference if you compare the stab leading edge with the vertical fin leading edge.