There are several competing stories as to where the first margarita was mixed and by whom, and Lord knows, we're not going to do a tango with that tar baby. Still, most folks can agree that the traditionally tequila-and-lime-based concoction has been around for more than half a century. So you can pretty much bet the hacienda on the fact that the initial margarita, despite its disputed origins, was not served frozen but rather on the rocks. There are plenty of purists who turn up their nostrils at these alcoholic Icees for just this reason. But we don't give a roadrunner's patootie about tradition. What we want from a margarita is salt, blended ice, a bowl-shaped glass big enough to eat Froot Loops out of, and enough tequila to subdue a snarling bobcat. That's why we pick Scottsdale's Salty Se--orita as the purveyor of the Valley's best margaritas. Not only do SS's margaritas meet all our basic criteria, they're like the Arnold Schwarzeneggers of Mexican cocktails, mocking those served elsewhere in the Valley as "girlie margaritas." The SS has 100 different brands of tequila to get you effed up on, and, as an added plus, on any given night of the week, the place is wall to wall with hot dudes and dudettes loudly pounding those jumbo, high-proof Slurpees like there's no tomorrow. Hey, what better way to hook up while downing your favorite, icy-cold beverage? Love or Cuervo, we don't care, as long as they're willing.