My DVD burner is a Lite-on drive. It works fine. It wasn't an arm and a leg. Trust me, you go with sony you're just paying extra for the name.
I did some looking up on google. Even sony uses rebadged Lite-on, Plextor and Benq drives.
So to answer your question you're probably looking at the exact same drives here, but one has a sony badge on the front. I wouldn't doubt that the sony is a rebadged lite-on.
There are only a hand full of CD/DVD/burner manufacturers, lite-on being one of them. If there is a name brand on it like sony I guarantee you it's rebadged and made by one of these generic manufacturers.
Its cheaper for sony to buy generic drives and put the sony name on them than it is for them to actually make the drives. So like I said, you're just paying extra for the sony name plate.
Save your money, eliminate the middle man, and go with the Lite-On drive.