Thanks for the condescending reply 4x4gearhead. I find that having more than one in each size/thread pitch/config, especially in the smaller sizes is the way to go. Warranty does you no good when you break a #4 tap off in a hole, don't have another and have to wait a day or two, or longer for the dealer to show up.
Taps are consumables, and should be treated as such. Buy good ones, use them correctly and you won't break many. And if you do, just grab another one out of the drawer and move on with your life.