I guess it comes down to use case. I am a forest service road camp person. I don't really have a desire to do the rubicon or some trails in Moab. I like to camp, and have an off road teardrop I pull. So, I'm looking for decent forest service roads and locations.
I have both OB1 and OnX, and several friends use Gaia and claim it's the best. I super like the curated trails and reviews/difficulty levels on OnX. I have a stock Tacoma, and I really want to know the difficulty level of the route I'm looking at doing. I always use my Mac to explore, the tablet to navigate. The missing part of the OB1 app to me is the webmap. In AZ and southern UT, there aren't many OB1 tracks, but I get it's new. So, I use both. I've jeep'd with friends in Moab, I have no interest in doing many of those trails on my own (rail bender, fins n things, hell's revenge), I'll be the designated photographer!
After a number of mis-starts, the Tab S6 Lite seems to be a seamless nav option(as opposed to the ipad paired with my inReach), but I don't get my emails on that tablet. So, I need to search the News area to find the corresponding info I received in an email as a recommended trail.
The series of videos and track from the continental divide run was great - even though I probably won't do that - those are serious modified rigs, but was an excellent inspiration! The email mentioned above from Oct, 5 area you need to explore - the Alpine Loop, we did that a couple years ago, and would fully recommend that to others!
The other frustrating part of OB1, is there a way to split the tracks? For example, House Rock Valley Rd in northern AZ and Southern UT. click on that and you get someone's 2500 mile track through AZ, NM, UT and TX. Perhaps I don't yet know how to split it up, but that length of track is almost useless as a weekender. It causes the app to zoom way out and just adds frustration when looking in a specific area. Again the curated content on OnX is pretty good for the light weight user like myself.