Disagree that it's Romo. He may be overappreciated by many, especially when I saw him ranked 3rd on all time best Cowboys QBs.
My pick: Jim Jeffcoat. Jim is an all time great pass rusher. He doesn't get his due because most of his career happened when the Cowboys were terrible. How many even know that he had 10.5 sacks in 1992, and was instrumental in the super bowl victory. Also had 6 in 1993, as his career was winding down.
Totally bro. I remember going through that 3 year stretch of losing the NFCCG from 80-82 and drafting Jefcoat in the 1st round of 83 and I knew little of him.
Those mid to late 80s Landry Boys team's had gotten older and weren't as successful as previous years.
But Jeffcoat was a newcomer and you could tell he was a natural pass rusher and put up good numbers on not so great teams, like you said.
I was glad to see he was kept on those 92-93 team's and still played at such a high level as you mentioned.
I thought Haze might do one of those posts about him like he did Thrill Hill. Like you said, over 100 sacks and a truly great Cowboy.
Romo would probably get my runner-up.