I love my Terry Butterflies - have the ti-rail/leather cover model on three of my bikes....but, I just bought this saddle for my mountain bike, which is now on my trainer indoors as I recover from pelvic fractures. It's a bit softer in the sit-bone area than the Butterfly, a pinch narrower in back, and quite comfy so far (I've only ridden 15-20 minutes at a time, but keep in mind I have broken pelvic bones down low, so any saddle that doesn't hurt to sit on is a winner):

http://www.performancebike.com/shop/...tegory_ID=5211

The price is amazing - I got it for $24.95, but it's marked down to 50% off now. Might be worth a try before dishing out a lot more for a Butterfly! If it doesn't work, you aren't out much!

Emily