The "British" or "English" accent has just been voted as the sexiest here in the U.S.
Problem is, no one defines what those are. To my tin ear, some Brit accents resemble Aussie's more than others, although I can usually detect the accents of our Irish visitors.
The other problem in defining accents is equivalent to one decribing the softly slurred southern Georgia or Alabama accent as a "Southern" accent alongside one from say, Texas. Most here in the U.S. can define a regional accent fairly easily...