As others have said, the S6 is a tweener (all-arounder). It's a bit large for an EDC and a bit small for a chopper, but despite that, it can do either and feels great in the hand. The SoD is a compact chopper; a Dog Father is an even better chopper, but the SoD is easier to carry -- I think of its role as comparable to a FSH. Personally, I prefer the S6 for most applications due to its neutral balance, but they're both fine knives.