As a scale fanatic, I'd go with full-sized myself... I've collected 1:18 planes from WW2, and they're pretty massive toys, but the size is part of what makes them so impressive hanging from the ceiling or displayed on a shelf... Having the space in a collection room is the key/problem, of course.
One walk through the Where Science Meets Imagination exhibit in Columbus a couple years ago made me long even more for scale versions of vehicles I know Hasbro will not be touching with a 10 foot pole. The Y-Wing I think was maybe my favorite model at the show, but man that big Falcon wasn't anything to sneeze at either...
Of course, a scale Falcon is basically a coffee table though too.
There's a guy whipping up a scale Falcon right now, and man is that thing amazing looking.