And I'd like to point out that one of the best DBs of all time (Corner and Safety) Rod Woodson had his corner career cut short because that little bugger could turn on a dime. Sanders deserves his accolades. He could have easily kept ahead of Smith had he not gotten tired of football. He was not only good, but he was good in a bad system.
I've always liked DBs to be quick enough to cover man but strong enough to support the run. Rod Woodson and Ronnie Lott were tops, IMO.
Giants fans of the late 1980s and early 1990s had the pleasure of watching a guy who may have been the most underrated player in NFL history. Mark Collins, who played left cornerback on those teams, fits your description to a T. He didn't intercept a lot of passes and may not have even made the Pro Bowl in his career, but a little research into individual game statistics would tell a remarkable story:
If you go back through the careers of the top wide receivers in the NFC during that era -- particularly those from the NFC East who played the Giants twice a year (Michael Irvin of the Cowboys, Gary Clark of the Redskins, Mike Quick of the Eagles) and those who played for teams who faced the Giants on a regular basis in the regular season and playoffs (Jerry Rice, Anthony Carter, Sterling Sharpe, etc.) -- you'll find that almost to a man they played their worst games of their careers against the Giants during the Mark Collins era.