I started out life using a lot of ORTF but I really abandoned it because I found that plain cardioids did not have the dimensionality I sought. As you may recall, Stanley Lipschitz was a purist and insisted that coincident miking was the ONLY way to go. But the slightly added time delays of ORTF can help with the sense of dimensionality. Still, in my opinion that is not enough. If you change to hyper or super in a semi-ORTF spacing you begin to get some of the out of phase bounce from the rear. If you change to Figure 8 blumlein the magical dimension really begins to happen! Mr. Blumlein had it right decades ago and it still rules! Usual caveats: In the right hall, with the right ensemble and included angle. Which is why supplementing Blumlein with a couple of cardioid or omni outriggers is an amazing way to have your cake and eat it, too.
