Brooks B67 or B68
(and anything else based on the B66 top: B66, B18, B72, etc.)
The other models are going to have you planting your sit bones right on top of the metal cantle plate (for example the B17-S is 177mm, the outer cm on each side is cantle plate so your suspended leather sit-spot is 157 mm) or missing the saddle completely (for example, the Swallow, which is 152 mm).
There are many reasons *not* to get a B67-S (short) or B68-S (short). The short nose means less control of the bike for some folks, and the resulting shorter rails mean some fitting issues. YMMV.
6 months free trial/full refund at www.wallbike.com
"If Americans want to live the American Dream, they should go to Denmark." - Richard Wilkinson