Myself I'm leaning towards DMR. Fairly cheap hardware is available. You can get reasonably priced Chinese radios. Then move up in performance to the commercial vendors, Icom, Kenwood and Motorola, yeah they cost more but have less issues than the Chinese ones.
I have a collection of radios for D-Star, DMR, P25 and NXDN. Nothing for Fusion yet. If one is interested in P25 or NXDN your only real choice is getting a commercial grade radio. As far as I know there are no "amateur" level radios being sold for those two.
Around the Detroit area, where I'm at, there is very little P25 and NXDN activity. In fact there is exactly ONE repeater in the whole state that is listed in "Repeaterbook.com" as being NXDN enabled! I don't think it's even networked.
https://www.repeaterbook.com/repeaters/feature_search.php?state_id=26&type=NXDN
Around the west coast area of Florida NXDN seems to have a fair bit of activity.
https://www.repeaterbook.com/repeaters/feature_search.php?state_id=12&type=NXDN
There are a few P25 repeaters around.
https://www.repeaterbook.com/repeaters/feature_search.php?state_id=26&type=P25
Most of the digital voice modes seem to be mostly used on UHF. That's fortunate since its far easier to find used commercial radios that do analog/digital in the UHF versions. The VHF models are not so common. And, in my case, the VHF Kenwoods seem to be expensive relative to their UHF versions of the same radio model, particularly for hand-held radios.
At lest all of the digital radios I own can also do analog FM too. Not everyone has a digital radio you're going to talk too.
The CON to the whole digital voice mode is if you want to use a different mode you're likely stuck buying another radio. Yes there are some out there that do more than one digital mode, and have a huge price tag, but none do all of the modes. You want to talk D-Star hang a radio for it on your belt, want to do DMR get another radio and hang it next to the other one etc. Petty soon your waist line is going to look like a Batman's utility belt full of HT's.