I am converting my defense to a 4-3 this offseason and I am just interested in what you guys believe is the key to a strong 4-3 defense. Is it strong defensive tackles that can stop the run AND rush the passer (05 Tommie Harris)? Is it defensive ends like Julius Peppers who can get at the QB and still be viable against the run? Is it linebackers who can run a cover 2 like safeties (Brian Urlacher type) and can stick on running backs and tight ends like glue? Is it sure-handed OLBs who don't miss tackles (Lance Briggs)? I just named all Bears players. What a fucking homer I am. Anyway, what do you guys think is the key position of need in a 4-3 defense?