I might be in the minority here, but I thought Mo Sikes was a bit overrated. I think he was an above average safety with decent cover skills. I guess it's not his fault he played in the same backfield with two of the best safeties to play college football. I always thought Mo Sikes was very suspect against the run. I remember him taking bad angles and missing tackles frequently on running plays. Again, I don't think he was a bad player by all means, just not as good as some of us remember him.
Now Darryl Williams, that guy was amazing, and we hardly ever talk about him in our conversations with our best safeties.