So! I ordered a new saddle today. Specialized Jett, 155 mm.

But I was soooo glad I'd done my homework, and read all the timely advice on this forum. I came into the LBS and said I'd like to look at a saddle 155 mm wide. LBS-owner looks at my narrow hips and says "No way, you don't need a saddle that wide!". And I could just look him straight in the eye and say "Oh yes I do."

I tried the Aspide Glamour Arrowhead first, but wasn't thrilled. It was wide enough in back, but the cut-out was quite narrow and the saddle felt a little domed from front to back. Basically, my soft bits in front felt squashed, even though it improved slightly when I tilted the saddle a tad forwards.

Then I tried the Jett 143, since they didn't have the 155 in. It was a bit narrow in back, but the wide cut-out was much, much better for me. I could feel pressure on the bones along the side, but not on the soft tissue. So I'm hoping the Jett 155 will be "just right"!

Funny thing: I was convinced that I needed a cut-out when I discovered that one of my dh's saddles was the exact same saddle, same width, as the one I've been riding on my road bike since last summer - except that it doesn't have a cut-out. And it KILLED me to sit on it!