The Revel delivers even a 25 unit bolus in about 5 minutes whereas on the older Minimeds that would take about 16 to 18 minutes. I'm not sure how long that large of a bolus would take on my Ping but it's real fast! Probably faster than the Revel. So if the speed of the bolus dose is frustrating you upgrading your pump is always an option.
I love my Ping very happy I switched from Medtronic but I do think Medtronic makes a good pump.
Why was your previous Dr sold on Medtronic? What about your current endo? Is your pump out of warranty? Have you thought about upgrading? Right now if I was in the pump market I would probably wait a little bit though if my current pump was functioning ok and I was reasonably satisfied. At some point the Vibe will be out and Medtronic's next generation pump is due out soon also. However if you're really frustrated with the Minimed and like the direction Animas or other companies seem to be going I'd switch now making sure you look into the various companies current upgrade offers. I believe Animas says if you buy now you can get the Vibe for $99 but I could be wrong about that.