I've had almost every wedge in my bag at some point, enough to form an opinion about the different types.
The different characteristics of the brands go beyond the dots in the pro shop.
The satins do have a little more spin than the pings - but (And this is a really big but!) the pings have a higher loft. You will be able to control chip and pitch shots a little better with the satins because of that little extra spin. However Punch and Flop shots are easier to stop with the PINGS. (you'll see me carry at least one of each)
You can actually spin a ball backwards Using a Punch shot with the master PING wedges. And you will land your Flop shots a little softer.
The Snake eyes spin a little better than advertised, I like them a lot. I will often bring them along, especially on standard or slow greens, where you don't have to worry about a flop rolling 10 yards on a flat green.