I had a non brand DVD Rom and it ate one of my cd's and spat it out all over my motherboard! No Sh*t! Got a Samsung 16X48X now and its very reliable..... go for a brand liek Smasung. Ye ha!
Go for the likes of LiteOn LTD-163D. This is a 16xDVD/48xCD with excellent qualifications for e.g. ripping sound-tracks.
Check the forums at www.cdrom-guide.com