I haven't had any center channel issues on mine, either -- just the previously noted DVD-A issue several post back, which is not a deal-breaker and I am sure OPPO can fix.

Edited NOTE: BTW, looks like there was a new firmware update issued yesterday (May 4). Will have to install and see what has changed.

New: Only had a chance for a brieft test last night, but it looks like the latest firmware update corrected the DVD-A issue in which a paused song froze up a bit after restarting it.