They're not bad, though I do know that when I first heard Chop Suey, I knew I heard another band sound just like them. Oh, I remember now... Faith No More released "King For A Day, Fool For A Lifetime" that featured the group performing songs with similar riffs and the singer doing vocals that are extremely close to what Serj does. Original, Indeed.
I've only heard "BYOB" on the radio. It's not bad. I'd download some stuff from the new record If I just had the time.