Where do you go for good drill bits? Years ago I bought a set of fairly sizable set of cheap Cummins Tools drill bits made in China. By accident I am sure they have been the best set of drill bits I've ever owned. Since then I have bought and been given several small sets and individual Dewalt, Caftsman, and Irwin drill bits at various stores as I needed them. All have been cheap POS and none as good as the Cummins tools set I bought. My teenage sons have pretty much ruined the most of my drill bits (why would you use oil while drilling?) and I need another good set (that I will hide) and what would people suggest?