Which Books saddle? The one with the "r" in it!
With that off my chest, I've tried the Brooks Team Pro and B-17. I can ride either, although the B-17 disappears under my butt, while the Team Pro reminds me it's there.
Saddles are a YMMV kind of thing. What kind of bike are you getting? B-67 would be great on a sit-up-and-beg cruiser bike, Pro on a racing bike (that you're not racing because the saddle weighs something), etc.