I'd have to vote against the Baby Graphics, even though I like carrying mine around. The problem is, from there it's a tiny step to 6x9 Linhofs, Horsemen, Plaubel Makinas, etc. which seem like overkill.
Hey whats wrong with my (original first model) 6.5x9 Plaubel Makina from 1930. It folds. Also has GG focussing, or a wildly inaccurate guess scale.