"Squeeze" mode
In the review you said, "I recommend turning Squeeze Mode off (so that 4:3-encoded material can be stretched to fit the screen if you so desire)."
If this is similar to the Oppo Squeeze mode, I recommend leaving it ON so that all material is presented in its correct aspect ratio, rather than having 4:3 material displayed in, as we call it in the pro video world, "sports-bar mode".
<rant>One of the most annoying things to me about modern DVD production is the mixture of 4:3 and 16:9 anamorphic content on the same disc. While it may make artistic sense to display some extras material in its original 4:3, there is no excuse for previews, studio logos, and the like to be 4:3 letterboxed.</rant>
That said, one of the best things about moving from 5-year old Sony DVD player and Hitachi CRT RP system to the uprezzing HDMI combo of Oppo and Westinghouse is that with the I *never* have to touch the aspect button anymore with the Oppo dancing between 16:9 and 4:3 as appropriate.