I'm nowhere near home or my Plextor/Plextools at the moment, but I think if you click the question mark button in the Plextools FE/TE area, it says something along the lines of "the FE/TE results will be used to improve the quality of the burn" or something similar. It was sufficiently vague (like the Plextor guidelines in the manual for every Q-test interpretation) to make me curious enough to try it out in the first place.
Not meaning to rain on your parade, I'll conduct some parallel test myself tomorrow. These Staples special MIB leftovers from the scanning spree of two weeks ago have no better use anyway. =) I'm planning to waste at least ten of them and suggest you do no less so that we can get some representative tests.
Feel free, but I've stated before that I don't burn test discs for testing's sake - not enough of a CDFreak, I'm afraid. Every PI/PO scan I've posted has been a real-world data (not movie) burn. If you think that might be skewing the results, OK, but I should add that I get fairly consistent results within each spindle, regardless of what data is recorded.
It might be better (not to mention more statistically significant) if we were able to persuade others here to pipe up and post results, just so the results and assertions can be inferred to more than a single drive/configuration. My assertion was at least partly intended to do just that. If I'm wrong or my results a fluke, I definitely want to hear about it. I think, however, that the advent of the 716 and its new AutoStrategy functionality will probably mitigate interest in this subject.
I'm thinking that if it does work, it will probably work on "compatible" media more so than the recommended stuff. Another similarity, perhaps, to AutoStrategy?
[FutureShop rant] Forget about the BenQ (Sony-made) 08D1 discs. False advertising/insufficient stock syndrome. Again. [/rant]