There are many good alternatives to the Apple SuperDrive on Amazon and Ebay that work well. Samsung and Asus make some good ones. Just do a quick search of either site.
I have read some of the reviews and they are almost laughable on the Apple SuperDrive. Some are actually just plain outright dumb. I have owned a superdrive since they have first come out and have not had a single problem with it. It has been a real pleasure to use and fits well with the aesthetics of my Apple devices.
Do not believe everything you read, including what I posted if you want. But the superdrive does work great. I also have a Asus drive that was a little cheaper that works just as well and it received very similar reviews to the Apple drive. Go figure!