You got the best response in post #3. I've used all the aforementioned sets above and none compare to Brownells quality or selection. Buy the set, add the thin bits and you've got 99% of any job covered. I keep a couple of spares around to be ground for specific jobs, like the screw in the fore end latch on a TM-1. I've been using the Brownells bits daily for the last 15 years, I've only broken 2 bits to the best of my memory. As the Snap-On dealer says, "Buy once, cry once".