Well, all my burns have been perfect thus far (since using the ISO with fix in Nero). They play on the various cheap players that wouldn't before (JVC, Toshiba) and the Pioneer. There is a tiny, split second pause noticeable if you look really really hard after "terminate her immediately." Great place for it too since Tarkin is just standing there looking stern anyway. ;)
Burning them at 8X speed didn't seem to make a difference, and I'm using Memorex.
On a small screen CRT (12 in) I can't even tell the difference in visual quality between the Purist and the DVD9... anyway, they both look great!