Verbatim in general is among the best media. In my experience the 16x +R Verbatims (MCC 004) is the best of the Verbatims - this holds true for a 8x laptop burner (Matshita), a 12x desktop burner (Plextor), a 16x desktop burner (NEC) and a 8x DVD Recorder (Sony).
Nobody makes perfect media all the time however - including Verbatim and Taiyo Yuden.
High Speed 8x/16x certified media will ususally not burn as well at low speeds (<4x/6x) as at high speeds, BUT it depends on the burner and the firmware. Verbatim 16x +R (MCC 004) burns well at 2.4x on my NEC 3500 with fw 2.TC, but Verbatim 8x -R (MCC 02RG20) burned at 2x on the NEC 3500 fw 2.TB is unreadable!
@exhale: Think hard about the following:
If you burn some data to a disc at low speed, do you really think that if the low burning speed makes the disc less readable in other drives when you burn data/video to the disc, that the same type of disc with PS2 software/whatever burned to it is somehow magically more readable in your PS2 drive?
The "wisdom" that PS2 discs must be burned at 2x is from a time when lower-speed burners and low speed media was all you could get, and now this is being repeated over and over again by people who have heard or read it somewhere else, even though it simply isn't true with modern burners and high-speed media!
You can choose who and what to believe or you can make your own tests and learn from it.