While it sounds as if you want the DMR upgrade, do you want or need the NXDN & ProVoice as well? Unless you have a system in your area that is still using ProVoice, and you can confirm that are not changing the system in the near future, I'd skip the ProVoice. The manufacturer no longer supports that format, and no new systems will be built. Most all of the agencies in my area that previously used EDACS (ProVoice is an option on an EDACS system, and EDACS is what is really going away) have switched to P25 (digital) Phase II, with a couple that went only to Phase I. The one ProVoice system here in DFW was DFW Airport, and they have switched to a new P25 Phase II system.