I'd give a slight edge to '89. One of the best teams ever to not win a championship, right up there with '91 (I think) UNLV. As for NBA propsects, '89 probably has an edge but D Williams ia a lottery pick, Head should be a 1st rounder, and I think Brown and Augustine might both be 1st rounders next year.
Hard to compare. '89 had better athletes overall and was stronger inside, but '05 has better shooters, better defense and plays great as a team.
A nice academic argument. I know that '89 didn't make it farther in the tourney, tat's for sure.