I haven't seen it mentioned so I'll add the one that I ride, Serfas Rx model. They're inexpensive at $40 and more comfortable than the Selle Italias that came on the bikes. I believe they are 143's but I'm not positive. On our tandem, my wife rides a 'comfort' saddle because...well because it's comfortable to her. She doesn't ride a solo. If I were you I'd get the biggest, cushiest, comfiest saddle you can find and ride it. You can always upgrade down the road to a "racing" saddle.