Either is fine. The auto safety on my Coggie works, but I never assume it's on 'safe' without regularly checking. The manual safety on my Bernie works, but I never assume it's on 'safe' without regularly checking. I shoot low-gun skeet and SC, and the safety never comes 'off' until the clay's flying and I'm mounting the gun (something that bothers me a little about the pre-mount off-safe shooters).
The important thing is that any gun can go off anywhere at any time,
so don't ever rely on
any mechanical safety, automatic or not.
