Yeah, I haven't heard IIz yet either. We've only recently received the 607's and haven't had one long enough to try out yet.
I note the Sound and Vision demo was done setup by Dolby using a laptop running the decoding software. Not quite an apples to apples comparison. Perhaps there were some tweaks made with the Dolby setup that were lacking in the Onkyo setup that Cnet did since I imagine having direct control of the software via a computer allows a lot more customization than what the Onkyo's setup would allow.
Just shows that it is early in the "front height" game. DTS hasn't even released their version yet.
Mark
Aperion Audio Guru