For a multi-tip system, this is the way to go:
http://www.amazon.com/Maxtech-16521MX-32-Piece-Precision-Bit/dp/B000MF754W/ref=sr_1_4?ie=UTF8&qid=1339299608&sr=8-4&keywords=precision+screwdriver+set
I have a few sets, and the build quality is great, no slipping, no stripping, awesome...