In my experience,
Brooks B17 specials seem to be made from more supple leather. I have a "Standard" and a couple of "Specials". The specials are noticably "more" comfortable straight out of the box and just in general. I love my Brooks, they are on all my bikes! 
I have broad hips, but I am comfortable and my sit bones do fit on a B17. Trust me, I've got the curves.
Try one out. Get a B17 special. Go thru Wallbike so you can return it if you don't fancy it.
If you don't fit. Try out a B67 or B68.
Best of Luck to you!
"Things look different from the seat of a bike carrying a sleeping bag with a cold beer tucked inside." ~Jim Malusa
2009 Trek 520-Brooks B-17 Special in Antique Brown
2010 Surly Long Haul Trucker-Brooks B-17 Standard in Black
1983 Fuji Espree Single Speed-Brooks B17 British Racing Green