Normally I hate, hate, HATE cheap crappy bits, but you never know when one might come in handy. Afterall, a poor quality bit is still better than no bit at all when you really need one.
There are a few sets that caught my attention over at amazon:
Generic 33pc set with security Torx, hex, and a few other styles. These other styles seem to change a bit depending on who the vendor is.
Neiko 100pc set with case, that includes just about any bit you may ever need in a pinch.
There’s also a 61pc Titan set that we discussed a year ago. For what it’s worth, if these bits perform as well as their case looks, it’s probably not appropriate to group them with the other two sets mentioned here.