Quote Originally Posted by Nanci
I'm thinking I need a new seat post to facilitate saddle switching, probably aluminum, because then I won't be breaking the rule about not mounting a rack on a carbon post, but am not sure what to get. I have a Thomson on my MTB, which I really like, but the adjustment is pretty fiddly.

What do you guys think is the difference, in feel, between aluminum, carbon and titanium??
Nanci, I'd suggest a 2nd seatpost that you just leave attached to the 2nd saddle and pull the whole contraption when you want to switch saddles. Then, your finely tuned angles, setback and height don't change each time. Just mark the height with some tape, pull, and shove in the other post.

Ritchey makes some really nice quality aluminum seatposts. The new Specialized Pave has a great clamp on it but it is carbon. You might see if they make an aluminum version. The head has infinite adjustment points.

I personally like ti rails in my saddles. I can feel the rails flex on hard bumps.