Hmm.... my slowest ARF (1/4 scale Extra) took much longer to put together than my fastest kit (frame-in-your-lap SIG Somethin' Extra). On the extreme edge of ARF'y-ness is the ModelTech Magic. I started that one on a Saturday morning and was maidening it in the afternoon. I'd say that ARF was much more than 90% complete, with it's semi-round sheeted fulesage and all.