I injured both of my elbows last August. The recovery hasn't gone as well as I had hoped. We made the decision this spring to buy a recumbent single for me to ride and a recumbent tandem for us to ride together.

If you buy a recumbent tandem you'll only have to get one bike but it can still cost as much as two singles.

I'm probably not the best guy to talk about pros and cons. I haven't really gotten the single bike functioning and the tandem isn't due to arrive until next week. Frankly, were it not for the injury, I'd be out riding a diamond frame bike right now. I'm bummed because the weather's beautiful!