My 2 cents say that I’ve usually found movies sound best in direct, or pure audio mode on the onkyo I use as a processor and past recievers as well. The studio spent millions on sound processing/engineering to give the listener a particular experience, and I’ve found it seldom, in my opinion and experience, that any of the pro logic or thx formats etc can make many improvements, especially on a blu-ray. (changing 2 ch for an old movie is different) Dolby can handle 8 channels, but I have 50 blu-rays and 500 dvds and only 2 or 3 are actually even in 7.1. When if ever they begin using 7.1 more is anyone’s guess. I would love to see 9.1 on a blu-ray, and if they start making them that way I’ll buy speakers for the extra channels, but I don’t trust processing formats enough to believe they can make noticeable improvements changing 5.1 to 7.1, never mind height speakers. I want the engineer in Hollywood to decide what comes out of which of my speakers, not the computer in my pre/pro. Obviously, it’s just my opinion, and it may not be popular but I think receivers and pre/pros are great for making room corrections like distance delay, spl levels etc; but other than that feed it to me best you can as the artist or studio intended. Seems like Hollywood should get on the ball.