I'll second this. For small holes in aluminum speed is king! Another thing I've found with cheap drills it that the triggers aren't very smooth, or don't stay smooth for very long. While speed is king for cutting the hole, it is often desirable to be able to start out slow to avoid wandering. A sticky trigger gets really frustrating and can quickly ruin more dollars worth of aluminum than the difference in cost of a better drill.If your drilling aluminum (as in aircraft parts) you want really high speeds (about 3,000 rpms). The faster the drill cuts, the cleaner the hole is going to be (and a lot less burrs to have to take off). I have used a lot of different air drills (mostly all cheap ones like CP and Harbor Freight type stuff). A new friend of mine suggested I spend a few extra dollars and buy ONE good one. I did. It is so light but yet cuts at 3700 rpm. Its only a 1/4" drill but its great to use. Its a Sioux 1214. I bought it online from "The Yard Store". I paid $199 for it but its the BEST $199 INVESTMENT I've ever spent!