1984 was pretty good:
Michael Jordan
Hakeem Olajuwon
Charles Barkley
John Stockton
Those guys are all arguably top-five at their positions, all-time.
Other players were guys like Alvin Robertson, Sam Perkins, Otis Thorpe, Kevin Willis, and Jerome Kersey. 2003 was deeper, but I don't think any draft has had four elite players of the quality that '84 did.