Which ripper are you using? I'm using cladDVD XP. Ripped 8 Mile (dual layer) last night w/ my Lite-On 166S at 6x. This is the first time the programer put a speedometer in cladDVD or else I wouldn't know what the speed is. Personally I don't really give a fudge how fast DVD rips as long as I got my complete movie in reasonable time, say < 15 mins.
But just for the hell of it, let me test a single and double layer DVD and see what the speed is. BRB
Update: And here's what I got.
Rip time: 265 sec.
Rip speed: Avg = 10.7x, High = 12.9x
Lock, Stock and Two Smoking Barrels -
Rip time: 516 sec.
Rip speed: Avg = 6.1x, High = 7.7x
I'm sure the numbers speak for themselves. I ripped the full screen version of both movies btw, if that matters.