IMO...with optical drives, none are better than the rest. I just go with something that has manufacturer recognition...and I harbor the premise that all optical drives are made in Japan, akin to VCRs when they were popular. IMO, the going rate for an optical drive should be no more than a max of $25 today..
I don't consider Asus as a source of anything other than motherboards, even though they do have their name on other products. If you go to their webpage...you will not see optical drives highlighted as products. I believe Hitachi and Toshiba make more drives than anyone else...but with subcontracts and licenses, just about anyone can slap their name on a drive made by any of the large manufacturers. Samsung, LG, and Lite-On are familiar names in the marketplace.