The Gayle Bradley has, hands down, been the best work knife that I've used. I've tried many, many knives. The only thing I don't like about it is that its opened in my pocket a number of times. I usually have other things in my pocket and they've been known to grab onto a Spydie hole here and there. That's the big peeve I have with Spydieholes... keys fit into them nicely and act as an anchor when they do. I wish the Bradley had much more resistance to opening, it's too buttery smooth for my tastes. No need for buttery smoothness in a work knife for me.
Yep, I have a Contego, too. In my work environment it is clearly outperformed by my Gayle Bradley. I do wish Benchmade would make the steels as hard as they claim. I guess softer steels would be less prone to breaking... I guess... but I want an edge that'll last a full day of usage without having to be touched up. The roughness of the Contego's scales is ideal for my blue collar hands but the ergs just don't feel right to me. Too narrow towards the front of the handle... feels pencil neckish for how much blade you're getting. I have an Adamas 275 in D2 that I prefer over the Contego as far as ergs and grind. I wouldn't think twice about it, even though I freakin' LOVE M4, I would definitely take the 275 over the 810 any day of the week.
me - my 2 cents