Replying to Spring break packages? (Non skiing)

Hey guys.  So me and my friends are trying to find a sweet deal for spring break.  Since the snow sucks this year and its my senior year we're gonna try to go somewhere with a beach.   We have heard that punta cana and cancun are probably the two best options with various places in florida being a close third. 

Our spring break is the week of March 5th.

Has anybody gone anywhere dope for spring break and would recommend it?  Any specific packages or companies that have good deals?  We're trying to party hard with a lot of other college kids.

We're ideally looking for an all-inclusive package covering everything(including booze) for $1000 or less.

Any suggestions?