Not only are there threads on each plane, but there are several threads exactly like the one you just posted. I suggest you force yourself to wade through it in order to make an informed decision.

I own a UCD and it's one hell of an airplane. It's bigger than the flip so you'll need a bigger engine. From what I've heard the Flip is a little wilder, but not neccessarily better. I just can't get past the looks of the flip. Looks like some feminist flung gobs of pastel colored paint all over it. If I owned a flip it would be recovered imediately