IMO, that'd depend a great deal on what you intent to do with the airplane, and why you bought it.

Someone put their kit built Hog Bipe on consignment, with all the gear, just bind to your radio and go fly? That'd be a BNF I think.

Maybe they put the same airplane on sale minus all the electronics and no motor. ARF, I guess.

Of course, MY latest project WAS originally an ARF...but I acquired it all up ready to go fly, receiver and all...but then promptly UNcovered it, and am bashing some parts and rebuilding others, but it's almost ready to start putting covering on ..so...

It's an ARFBNFARUKitARC?

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