I've had my ping for over two years (had a Deltec Cozmo before that).
Color screen on the pump (very easy to read).
Ease of entering bolus.
Ability to give yourself a bolus without removing the pump from your belt (or wherever).
VERY good BG tracking and analisys from the software built into the Ping meter (as good as anything I've seen for a PC).
It is possible to save the pump programming. (The program can also be printed out.)
After entering your meal glucose, and seeing the suggested bolus, you have to enter the bolus manually, by mashing the "up arrow" on the meter or pump, and watching the numbers scroll. . It's virtually impossible to get the EXACT bolus amount "right off". You'll have to adjust the result up or down a bit after stopping the scroll.
SOME functions of the pump can't be set or cancelled from the meter (you can't cancel a combo bolus from the meter, for example).
You can only see your BG history on the meter.
No "missed bolus" reminder.
No "Change site" reminder (you CAN set a "generic" reminder to have the pump and meter alarm at a given time...but the actual alarm doesn't tell you anything. I have an alarm set for 11:00 AM to remind me to bolus for lunch...and the pump simply says "11:00".
All in all though, I still think the Ping system is one of the best out there, and I'm very glad I chose it.