I upgraded to the 530 from my 510, at least partly, for this same reason. I’ve used it a fair amount off road for the past few months. My main takeaways are:
- The off road navigation / maps are significantly better on the 530.
- It is worth making sure to turn off a few features, like auto re-routing, when you are on trails because it tends to get confused and repeatedly tries to circle you back even though you know you are on the right track.
- I tried using the Trailforks integration and had several frustrating experiences and gave up. Not sure if this is just me, or a general issue with the app.
- Not related to your question
but the 530 is also significantly better for outdoor workouts, in my opinion (the other reason I chose to upgrade).
I read up a lot on the 530 and Bolt/Roam via DC Rainmaker and went with the 530.