The best available are the Brownell's Magna-Tip driver bits.
They're very high quality, very smooth, and very hard bits.
Damage one and all you have to do is email Brownell's and they'll send you a replacement.....FREE.
I recommend buying one of the Law Enforcement size handles. They're the perfect size for good control. The large size handle is too big and the stubby handle is too small.
The Brownell's sets are the industry standard and are perfect for the job. Like all really quality tools you only have to buy them once a lifetime so you actually save money.