They are good knives. I have one, I never use it and I must say I don't like it. It's a personal thing and has nothing to do with the knife. It's a fine knife, it just never was or never will be what I want or need. I really wanted to try something with the Axis lock system though.
I have gifted a bunch of griptillians to friends, I trust their work. With that said, when it came time to buy a replacement for my lost Sebbie/Emerson... I went with another Emerson (next one won't be an Emerson, but it won't be a BM either).
I think it's more personal though than anything reflecting the quality of their work... Maybe I am rocking the boat but I just find most of the BM's I've encountered as soul-less. They just... Don't do anything for me. As for how the Emerson/spartan looking sebbie spike my apple, I have no idea. /shrug.