I had both, and I still have the BAD CASS and plan on getting another, along with a BAD ASS, and a BAD ASS-22. BAD looks better and the CASS has dovetailed levers for additional measure. To me it "fits" better ergonomically and functionally. The customer service is indescribable! They are very active on the forums and they will bend over backwards for you. I haven't had to deal with Noveske's CS so I can't speak to that.
the Noveske was too thick, in it's defense I guess you could dremel, sand, file the levers. Or you can get a BAD and call it good :P other things I didn't like on the STS: the set screws suck to install (I was using a jewelers screwdriver and a leatherman to turn the screwdriver), the levers are really hard to get off the center section, and the right side short lever is invasive(I'm right handed). it's more affordable and the 60 degree throw allows the use on standard/non-45 or 50 degree lowers without potential legal and warranty issues ;)@Duffy