Thanks for replying!
I am still a bit stuck. First, my menus don't look like the ones you describe:
Second, while Nero CD-DVD Speed works with my Lite-On Combo, it has only limited use with my Plextor PX-716A. For example, when I switch to the "Disc Quality" tab and click "Start", I always get a message saying "Error initializing test" before anything else happens. I upgraded CD-DVD Speed to the latest version (4.01), but my results are the same.
Re: quality scores. So my overburned Fujifilm DVD+R that gets an 83 is a "poor" burn, correct?
Again, thanks for the response, I really appreciate it.