Can anyone recommend a set of precision screwdriver bits that won't bend or chip in the first three times it's used?

I work in tech support and often have to do hardware-related support. I've got a cheapo set of screwdriver bits that I use for taking apart some of these stupid thin laptops, but they are terrible quality. Before I spend actual money, what are some good brands? I'd need slotted, philips, and torx, at the very least, preferably with interchangable bits, so I don't have to carry 30 screw drivers with me.