i have a BT headset but after the initial few days of usage now its just lying in some corner of my house gathering dust
also while driving if the call is important i just move over to the side of the road and answer it...if i cant move over and if the call is important to ignore i just pick and i say "i'm driving and will call back in a few minutes". this usually works for me.
and you guys should pick up the previous issue of "Week" Magazine which featured a cover article on this topic.
ah well just be safe guys