The UCD 46 is one of the best purpose designed 40 size planes ever built and one of the best flying planes I have flown of any size. It looks and flies much better than its bigger brother and is the one of the best values on the market today.

I cannot comment on the Razor from any first hand experience . It appears to be a design suited for a more experienced 3Der and other Lanier products have not impressed me much. Go with the UCD 46 and enjoy.