I don't know really. Saddles are very individual. The reason I suggested the B72 between what you listed, was because the one I have has thinner leather than my B17 and flexes a lot, it has been comfortable since the moment I put it on the bike. The springs are the vertical loop type and seem to flex easier than the coil type.

There are many good seats out there, though not a lot are suspended. As someone else mentioned, you could try a suspension seat post as well.

The great thing about buying from Wallbike.com is there is no real risk to you. If you don't like it, send it back, and you have six months to decide. The are seriously great to deal with.