I really like my S/As. They aren't perfect though. Mine all squeaked - one was just unbelievably loud - but all were fixed by removing the little nose cup thingy and liberally greasing the metal-on-metal parts. They also have very light-gauge rails, as compared to other saddles. There are multiple reports of bending. I took care to set them in the middle of the rails and so far have not had problems, even at 200 pounds. If you need the saddle far forward or back, though, be forewarned. I also find them occasionally "pinchy" at the cutout. The folks at S/A adamantly deny the possibility, but I'm here to tell you it can happen. It's not a big problem, at least for me, but the possibility exists. Finally, it seems to me that the quality just doesn't match the price tag. There's nothing about the saddle that screams "quality" the way a Brooks does. It all works, but I'd be a lot happier with, say, a $100 price tag.
Now, having said all that, I've never owned a Brooks that was as comfortable as an S/A. I've tried a half-dozen over the years, tried every break-in trick in the book, used a two-bolt microadjust post to dial the angle down to a fraction of a degree... they just don't work for me, while the S/A does. So I'd definitely try one, if I were you.
But having said all THAT, I'll note that I've been using the Velo-Orange leather saddles for the last year or so and find them even more comfortable than the S/A, and they're a heck of a lot cheaper, too. The only downside, so far, is questionable quality. None have yet let me down, but again, they are obviously inferior in quality to a Brooks. If Brooks would only make a saddle with a top shaped like the V/O...