I quite like the sprung Brooks saddles (had a Conquest for years - was sad when it was discontinued, but happy to see it's back), and haven't had the same problems as LWaB, though doubtless have done a fraction of the mileage. Springing is fairly stiff, so I find it's more that it takes the edge off bumps than giving a really plush ride, and there's no damping. Not sure I'd use one as well as a suspension seatpost though - I suspect that they'd end up fighting with each other and giving a particularly choppy ride.