I've been using the Ping for less than a week and am already in love with it.
If other insulin pumps achieve the same results than they are probably all good.
As far as setup and using the device, it has been a snap, for me it is easier to insert the infusion set than it was to take a shot from a pen, and the interface is really simple. The learning curve wasn't bad for me, but I stare at code all day so that may have given me an edge.
Bottom line is I feel fantastic, my A1C was getting out of control (8+) and my levels are already way better and I feel like I've just cut a huge ball and chain loose.