I read both their PDF manuals and they appear to be identical in both features and operation. What's more, at www.videohelp.com/dvdhacks , I find out that 9210 is how you access the hidden menu! I am also aware the Cambridge runs between $350 and $400, as opposed to the Oppo's $169. Are the internal audio and video chipsets and processors identical as well? Is there an advantage to the Cambridge over the Oppo?