I'm 5' 11", lean into the shot just a tiny bit, tilt my head foward a bit, cant my bow about one o'clock, keep my bow arm straight, and I draw 31". But I have long arms.
I never have understood why anyone would want to keep their bow arm bent, or who decided you aren't supposed to keep it straight-period, but to each his own, straight works for me.
As far as the best or correct draw length, there's a lot of variables shooter to shooter, as noted above, even between shooters about the same size. You answered yourself in your first post, what ever is the most comfortable and consistant for you.
Oh yeah, if you don't want to straighten your bow arm because of hand shock, my advice, for what it's worth, would echo those above. Get a bow that ain't got any, way to many choices to put up with a shocky bow.