I recall a concert by a lady singer-songwriter - I can't even remember who it was - who came on stage with a Martin dread and a Taylor Grand Auditorium. I said, "I bet the Martin is tuned to standard and the Taylor to DADGAD or some open tuning." I was right for once.

I don't know anything about Apollo guitars, but I agree with Kendall (hoping it doesn't go to his head): A 12 is great for DADGAD. If I still had one, I'd leave it tuned that way. Six different Ds and four As. That's a lot of harmonic reinforcement. And with so many unisons and octaves, you can tune it in a finite length of time.

Peter