Chaos A.D. owns. And then BTR, and then Arise, although musically speaking, Arise is the masterpiece because it fuses every element of their pre-DerrickGreen-era's sound.
Schizo is pretty good, too, but the production isn't so great, and the songs tend to thrash along for long periods of time without actually saying anything. There is still some experimentation(circus melody in R.I.P.!) but...I dunno. It's lacking, IMO.