The jury's still out on my B17. I've only been on a few rides, and after some adjustments, I found it pretty comfy. But I'm not totally there, yet. I need to ride it more. It's wider than my Butterfly, but there's no cutout. I tilted it up ever so slightly as suggested on these forums, and that was a big mistake. Serious no-fun. It is much better now that it's level.

One thing I noticed is that I cannot position the saddle as far back as my Butterfly because the rails are wider. That means that the Brooks is about a 1/2-inch further forward than my Butterfly was. I'm not sure that this matters, but it might.

I'm also not sure yet about the lack of a cut-out. My longest ride on the Brooks so far is only 30 miles, and half of that was with the tortuous tilt-up, which made the entire ride a bit iffy. I'll report back after another longer ride this weekend. During the week I mainly ride my city bike, which still has a Butterfly on it.