Of the 3 processors you listed my personal choice would be Meridian. It's Home Theater performance is right up there with the Lexicon MC-1 and the Music is great as well. Even better the Meridian processors are the only ones at this time that have Pro-Logic II and they can be upgraded from Meridians website.
Classe vs Meridian vs. Theta
I am building a new home theater from scratch, but i am limited in the availability of products to audition in this area. Does anyone have a recomendation on the best processor. I will be listening to music 50% of the time, so this plays a major role in the comparisons. Please help!!!