Very hard to answer, which makes it a great question. But the definitive answer is:
Honorable Mention: I think there are three players who aren't the answer that you can make a case for. Chronologically, the first is Henefield. The guy was pure magic, and was the spark that pushed what Calhoun was doing forward. But against him is that he only played one year. The second is Ricky Moore. Simply the most dominant perimeter defensive player I've ever seen. For those of you who remember how Boat played in the NCAA's for 6 games -- imagine someone playing with that level of intensity, and switching off between guarding a 1 or a 2 depending on who was the bigger threat -- every day for 2 seasons. But the downside is he was merely an adequate offensive player. And the third is Daniels. I still do not understand how someone with his size and skills, playing the way he played his last year here, hasn't gotten onto a NBA roster for a test. Plus, he won us a ring, and as great as 'Bazz was, we didn't sniff the Sweet 16 that year without Dre. Downside is he was only great for a year and a half.
The winner is Doron. The guys was an All-League, honorable mention AA player for three years. I never saw him as a good NBA player because of the lack of lateral quickness, but I always assumed he'd sit on benches for 5 to 8 years collecting paychecks.