Newegg is a very reputable source for hardware, while I have not used them, I have more than one friend that swears by them.
I've never heard of LiteOn, so I can't comment on their quality. Keep your eyes open for Sony, LG, and the like. Spending a little extra for a quality drive is well worth the time and effort.
On another note, I reccomend keeping your DVD and CD bruners as seperate drives. It may cost more, but when you do a lot of disk copying it comes in handy. That and any DVD drive will spin/read faster than most burners, so things spool off of the CD more quickly.