I also have heard great things about the custom plugs, I on the other hand use the foam, and i guess i just have ears where they stay in lol. they get dirty so I buy standard foam ear plugs, punch a hole in them and replace every once in a while.

The one thing about ear plugs that gets me is that I for some reason like to hear everything thats going on with the car especially tire squeal. for me personally having plugs that kill all the moise is almost like dampening my senses when im out there. Im one of those guys who tells my crew chief to keep quiet unless its essential and in qualifying i often opt to ditch the plugs all together. anyone else like that? and anyone know how much the cutom ones kill noise versus foam?