Thanks for all the opinions, and the cool pictures!

I went with another black Brooks, as my sit-bones seem to appreciate the B-17, and I now have them on all three of my bikes. Shrevvy still has a brown and a honey on the For Sale forum, at what I considered a fair price.

I do still have the white Turbo that came with the Ironman, but it's in so-so shape and not as comfy as the Brooks.