I ride bolt upright -- back problems, plus I like to look around.
My favorite saddle is a Brooks Flyer. It moves with me from bike to bike, depending on what bike I'm riding most.
Actually have 3 Brooks saddles at this point -- 2 Flyers, and one that is same shape but without springs (B17?).
The effect of springs is pretty subtle. They are stiff. Like Chalo said a few posts back, mostly reduces vibration.
Not particularly for dealing with potholes and curbs... getting up off the saddle works best for those.
One thing about Brooks saddles. Their build quality seems uniformly great, but the actual piece of leather used
in a particular saddle makes a world of difference. On my favorite saddle, the leather was pretty much
broken in from day one (same model as in OP's photo). On another saddle (same model but black leather),
the darn thing was like it was carved from stone, the leather was super hard. After a few hundred miles
on it I decided something must be done. Soaked it in neatsfoot oil, then wailed away on it with a ball peen
hammer to soften up the leather. Really worked it over. Then rode it pretty hard for a few days.
The leather on that one is still tougher than the other, but it's much more comfortable now.