well, I'll be the first to be different and say it depends on how high (or low) ended your rig is. The Liteon drives are fantastic, except they have a much higher then average cpu usage compared to other brands, and on iffy media they tend to cause some erros, specifically on memorex media (according to
www.cdrlabs.com). However, you have the all important ability to burn SD2 copy protected things, which if thats what you're getting it for, to copy games, then the Liteon is your drive of choice.
The asus drive hauls, is the fastest 48x drive you can find, but I'm guessing it's probably hella expensive compared to the liteon.