We upgraded to the DASH system about a month ago and absolutely love it. The interface is so much more user friendly. We also use the Dexcom, so not having a built in meter was not an issue for us. In the summer they will be releasing phone apps so that the data from the DASH (such as IOB) can be viewable on your own phone without having to pull out the DASH itself. This will be super helpful for me as a parent of a T1D. The system itself works just the same as the old one, so you should have no worries there. Someone mentioned that if you want to do DIY looping you would need to use the old pods/pdm. But I also want to mention that Tidepool is working on the getting loop FDA approved for the DASH system, so that will be a possibility for the future. Good luck with your decision and I hope this helps!