As someone else mentioned almost each manufacturer markets both good and bad ARF's. Here are a few I've had good luck with and one bad one!

Other good ARF's I've assembled;
GP 1/4 scale SpaceWalker
GP .40 size Extra 300S.
Hobbico Superstar 40, Superstar EP and Avistar
WM T-34 and SS.40

Lousy ARF's
Cermark Bobcat - very tail heavy, flimsy cowl, packed poorly and horrible tech support.

Jury is still out on;
VMar Edge 530

Jeffrey Benko
Palm Beach Skyhawks
AMA 82103