I've found the Brooks are pretty sensitive to saddle angle -- or perhaps I should say, my bottom is sensitive to the saddle angle. On a typical one-bolt seatpost, it was hit or miss whether the micro-adjust angle adjustment would hit a high or a low spot at the perfect angle. No worries with a two-bolt post; you can tweak those to a fraction of a screw thread, and the whole thing doesn't lose fore-aft adjustment in the process.

If you haven't tried a two-bolt seatpost, you might find the perfect saddle angle for either saddle with one.