I have recently been trying out a Selle SMP TRK medium saddle. So far, it is working well and I am encouraged. I am thinking that at some point I might want to try some in the pro line with similar dimensions. The Avant and Plus both seem in the same ballpark. Does anybody have experience moving from the TRK to the Avant or Plus? If so, how do they compare? It seems that those two may be closest. I would love to hear experiences.