OK, I am at a point in my life where I want to make sure that the tools I have are dependable, and this weekend was pretty frustrating.

This weekend I was working on a project and I had to make some countersinks for some screws...digging through my stash of bits I had a mish-mash of 14 different countersinks and every single one of them was unable to complete the job satisfactorily...all of them I bought over the last 20 years from either the BORG or discount online offers and all of them were useless...all I was trying to do was bore some 3/8" x 1/4" countersinks in some oak and although I was able to make them the results were either burnt, chipped, off center, etc.

SO, I want to buy one GOOD set of countersink bits (just the countersinks not the one with the drill bits) that has the most common sizes for drilling wood, which do you recommend?
Thanks, Eugene