I can't believe, (well, I guess I can...) no one suggested buying just the drills you need. as you need them. If you want a set, sit down with a drill chart and order one each of the tap and clearance sizes. And maybe fractions. Unless you are expecting to do drill/ream work, What else do you need!
Buy the best available, you'll pay far less than buying a set a high percentage of which you may never use.