Just test road a Santana Arivia SE. I really liked it and the wife loved it. I am a 12 year veteran rider of road/mountain and she has ridden a mtb bike VERY casually over the past year. She also rides my trainer in the house somewhat.
Anyways I am looking for a bike for use on road only, tandem rallys, possible centuries, and club rides. I get the impression that my wife will want to fast and "challenge" herself. I myself like speed and pushing my limits both in endurance and speed.
That being said I am looking hard at a Burley Rivazza or a Tosa. They seem to be the best bang for the buck. I like the full ultegra, disk wheel, and the wheel set on the Rivazza. I have been told that the higher end bikes (Santana, Co Motion, Calfee) are a better rides because their frames are better quality. It seems to me that the Burley is a no brainer when it comes to value especially since this will be our first tandem.
So with all that in mind what would you do?