I have both. The 710 (plain satin blade) logs more time in my pocket than any other knife I own. The 806BTD2 was carried for a few days, and sits in the collection.
Why? Glad you asked...
The blade shapes are very similar, but the 710's recurve makes it a better slicer.
Also, despite the similar blade sizes, the handle on the 806 is at least a half inch longer, making it a bit less comfy to EDC. I don't have big ol' mitts like some guys, so the larger handle to me is just, well, larger. The 710 fits my hands like it was made custom for me.
Despite it's size, the 710's shiny blade doesn't freak out sheeple as much as the "evil" black blade on the 806.
Oh, and I've never gotten used to seeing that hole in the blade; on a Spyderco, with a big hump on top, a hole works for me, but the 806 just looks like it's going to break there. Must be the engineer in me, looking for potential fracture points...
I'm thinking seriously of selling off both the 806 and 710, picking up a 710HS, and stripping off that ugly black coating for my ultimate EDC. As much as I love my 710, the idea of one with tool steel gets me all tingly!
