I purchased a B17 Standard this spring (2008) and now have about 200km on it.
For your comparison; I'm 38, 6 foot, 185 pounds and loooking for a meaningful relationship (just...kiddin' there hey?)
At first it was a tad uncomfortable on my 'sit bones', but now I can already see my butt bones in the saddle and I find it more comfortable. I've only done 30km trips so far, so final judgement will be on a 100km plus ride to see how comfortable it is. But it seems hopeful.
When I first bought it, I tapped my knuckle on the hard leather and it made a firm "thump" sound....okaaayyy, this is supposed to be more comfortable?!! But it seems to be true, it's breaking in.
Most people like them. You don't know until you try.