I've had both. The bc seems a lot more stout and I LOVE D2. I reprofiled it to a 15 dps and it is by far one of my best slicers. Unfortunately, the ribbing on the handle is right where the pocket clip touches. I had to sand them down with 600 grit sand paper, and also the clip where it touches the handle. It is a lot smoother, but I'm looking to ask Keyman if he can make some custom scales for me. I love the way it feels in the hand though.
The mini is fantastic, I just prefer G10 over ¿norylex? Not sure if that is what it is called. I would recommend getting a mini through the customize a grip option on their website. All black blade and hardware (D2 of course) with a white handle looks sick!!!
Either way, both are great. Bc is tougher feeling while mini is more pocket friendly.
-Steve