Where should I spend my 21st birthday? (Las Vegas, New Orleans or Miami)?

Okay, just to give you a little more detail. I will be turning 21 in May of 2012. Im an African American female student at Penn State and my friends (about 4-8 other females) and I like a wide range of music. House, Hip Hop, Rock and John Mayer-y type of music suits us (As far as clubs go). We are mostly on a tight budget (Luckily our hotel is paid for) So I'm looking for a place that offers a variety of things to do at affordable prices and also is pretty easy to get around (i.e. Public Trans or Most things in walkable or taxi-able distance) I don't drink but my friends do, So affordable drinks would be great also :) Thank you!!