My friend almost bought a new Trek T900 but it turns out he's too short for it--the standover was, um, snug. But he discovered that the $600 Raliegh aluminum "dirt" tandem with 26" wheels fit his and his stoker just fine. He bought it today. I brought it to our place on the back of our van and they and we went out on Palo Alto's Baylands this afternoon. His wife seemed to actually like it. And he's ecstatic. It actually looks OK. Not quite our Santana Visa but I wouldn't sneer at it myself for casual riding arounding.
Now to sell him on buying our old Yakima tandem mount for a Yakima roof rack...