With all due respect to hammad, I don't think that it's worth waiting, at least if you don't already have some kind of drive. My reason is that the difference between the time a 48x drive takes to burn a disc and the time a 52x drive takes is about 10 - 20 seconds.
From prior experience with Lite-On drives, I would recommend the Lite-On. The LG is pretty good, too, I believe, so you could probably get either one without problems.
I hope that helped!