I just finished my UCD 3D 46. Sweet plane! I haven't flown it yet, but i have heard only good things about it. Personally I'd go with the UCD...

besides... IMHO the harrier is a little wierd-lookin' with out any taper on the aft end of the fuselage... but if that doesn't bother you, then the rest of the plane looks great, and from what people are saying about it it flies great too!

I think you'll be very happy with either one!