Integrates with Plex media. That is, with existing libraries (if you want). So “movies” will to into “movies”, “TV” goes into “TV”.
You can start recording while watching something live.
Plex allow for remote access, you just need to login to the server (like you’d normally do for remote use).
Tons more FAST channels on Plex, but, can’t record them.
Plex stores the original ATSC (based on tuner choice, but is the general case) and then you get the power of Plex to transcode as needed to end devices. That includes watching live. And when watching something being recorded, you can watch from beginning or watch live and fast forward and rewind work.
You get the option of automatic commercial removal (which isn’t perfect), or (what I use) commercial skip, which marks commercials for easy skipping. Through post recording, thumbnails are generated and scrubbing works just fine, in case you choose not to do either.
Essentially, you get all the features of the OG Tablo, plus the abiliy to have as many tuners as you want, a ton of FAST channels, integration with Plex, all features you expect with a DVR work (uses prioritized recording with regards to conflict management, but does tell you if you’re setting something to record and there is a conflict.
Likely if you mention a feature that isn’t there on 4th gen Tablo, or doesn’t work most of the time, it’s going to be there on Plex DVR, plus a ton of other features.
I own two of the OG 2 tuner Tablos, and they are still online and I still use them. But Plex DVR is a lot better. Plex DVR is “new” compared to OG Tablo and so was not out, even beta when I bought my Tablo units. It does cost more to get “set up”… but it’s not going to frustrate like Tablo.