My husband and I bought a Cannondale tandem from Gateway last year and love it. We had also test ridden a couple of different Santanas, and while we liked them, the Cannondale fit my husband a bit better (he's 6'3" and needed an XL size up front) and was somewhat cheaper than the Santana. If you're in Portland, River City has Cannondale tandems (we didn't buy there because they didn't have the right size in stock). They will let you take it on a fairly long test ride on the Easbank esplanade, which is really nice to get a feel for the bike.