This has been discussed a lot, and there are always people that claim saying nothing is best, but in reality this will piss a lot of cops off, and get you into some shit that could have been avoided with some choice lying. Not everyone is a masterful liar though.
Which part of "anything you say can and will be used against you in a court of law" do you not get oh great master?
You spin your BS next time you have a run in with them, I'll stick to saying next to nothing, and allowing my attorney to do the talking since that's his area of expertise, not mine.