I know your budget is not to be above $40.00, but if you do consider it I highly recommend the
Lezyne Alloy Floor Drive, as I do to all my customers. Once the chuck breaks in they're easy to use, very efficient and accurate. Also it looks as if they can be had for $50 if you shop them around; I know I would sell one to a customer in my shop for that if they brought me a competing deal.
