It's interesting to have read the other replies before posting... for example, I think LiteOn supplies internals for HP. My personal experience with the HP that came in my wife's GX5050 is rather unfavorable, producing DVDs whose readability was almost uniformly suspect. Five or ten years ago their burners were tops but I'm not sure about now. LG and Pioneer make great drives but Plextor usually gets the most raves. YMMV...