Terrible reviews for the Apple Superdrive? Really? I could see dinging it on value (if one places a low priority on design and simplicity), but it's a great device for it's intended purpose.
I dont see any point in the superdrive. why spend 80 bucks on something that cant even read rip or play blue rays. if your going to spend the money then invest in a slim (if you wish) blue ray player for the same money
We ran into the same situation awhile back when my dad bought a new Mac mini - he just picked up a cheapie $35 LG drive from Best Buy - it worked fine out of the box with no extra drivers. No issues or concerns to speak of.
Mine is over a year old, ripped countless DVDs and still performing well. I prefer it for the sleek look that matches the iMac. But there are plenty of well performing alternatives at a cheaper price. Any standard USB external will work with the Macs, just search Amazon and pick what fits your budget best. If you are concerned about reliability stay with well known brands: HP, Toshiba, LG, Samsung, etc. I have noticed Amazon puts out one under the Amazon Basic label. Probably worth checking out.