Hmmm, Brooks B72 or B68?

[Andrea]

I've got both, a B68 on my commuter and a B72 on the Xtracycle. The B72 does squeak a bit, and I haven't noticed a whole lot of difference in comfort because of the springs. It looks cool, but if you want the advantage of a sprung saddle, I'd go with the B67, otherwise stick with the unsprung B68.

Thanks for all the quick replies! Which one has more rail length? The B17 rails are really short, and I'd probably end up getting a seatpost with more of a setback if I stuck with it.