HoF for certain. SHould be a first ballot inductee. Other than Ray Lewis, no other LB is more deserving of the nod. He'll get in...
I have no argument with your assessment of the big 3. Although, I'd have liked to see Bill Geroge's stats in there too...
Going on pure gut...I'd go Butkus 1, Singletary 2, and Url 3. Singletary played with a stacked deck. So I think his numbers could have been even higher had he not played with a handful of other HoF'ers... But that's only a gut feeling.
I just thank my lucky stars that I had the opportunity to watch every single move Urlacher made. I didn't have that with Butkus because I was too young, and I didn't follow football as religiously when Singletary played. Only as his career winded down, did I do so.
That group of 3 (and the addition of Bill George) is simply the best "generations" of MLB's in NFL history. How lucky are we to have them as Bears!?
I eagerly await the next!