I think the brick and blue aoto are great for wailing on after thinning to get scratches out. Have never used a bester 1200 but for cutting speed to polish ratio I think these two would be tough to beat.
For whatever reason the green brick works really really great as a finishing stone for stainless. Dont ask me why. But i prefer it for stainless over my rika 5k and 8k kitayama. Other than that, it clogs pretty easy and i always seem to accidentally chip off pieces while sharpening.
My synthetic blue aoto just started cracking very shortly after I got it. I take care of the stones. I looked it up after it happened and turns out its a fairly common problem. My stone was still ussable after gluing it to a block...but I wouldn't recommend it to anyone because of this.