I don't really know if there is no content for sure. I just haven't noticed any, nor have I missed it, having dts and DD and others available.
I have two outlaw systems:two 990s, a 7700 and an older 755. I'm a "happy camper" without THX.
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Living Room: 5.1 Surround and 4channel inline room 990/7700/6-KEF-107s/LFM1 x 2/ SMS Awaiting Trinnov Millenium dts decoder;Digital Director Players: Tascam CD01U/SonyCX455 x 3/DV955/BDP83 Old Sony 60" SXRD TV Zone 2 (also liv-Room: listening to music while Mrs watches TV): Crown SL2 preamp/D40 Amp/Stax Headphones
My "Man-cave": 4 channel-only inline room. No TV (thank heaven)!!! 990/755/4-KEF 107s Tascam CD01U/dts decoder/digital director Alesis 16x4x2 mixer Recorders Alesis HD24/ML9600/Crown CX844s/SonyDAT/Tascam DA38 Ham Radio Shack (KB1STH) ICOM/Yaesu/Drakes x 3