due you trust it? What drone/s?

I have a both the M2P and the M2Z, and my answer would be.

No for usual speed flying (sports mode is a rarity for me).
Sort of during slow speed flying but watch it like a hawk and a thumping heart.

Sort of, on M2Z, NO on the M3 at the moment?, I don't believe you should ever entirely trust automotive "navigational" aids. Only my opinion...

Air 2s, I keep it on unless landing close to me and need to make small movements without it rising to avoid me.

My M2P seems to trigger the OA sensors a lot in bright light or low sun conditions so I often find myself turning it off.

I quite often forget about my M2P having OA as I tend to fly it in open spaces and still keeping a careful watch on it.

Fly M2P in P mode or Tripod mode and have never had any problems.