This is a band that I didn't like initially when their self-titled album came out. I didn't understand the craze behind them, and even disliked them. However, I eventually gave them a chance and grew to like them.
But I must say, my opinion is the exact opposite of yours!
I think the new album is incredibly lackluster, and sounds uninspired. There's no 'feel' behind any of the songs. I do appreciate the more aggressive tone that the new album has, but even those heavier tracks sound like Iowa b-sides at best. Corey's voice is a lot better than on Vol. 3, but I'm not a fan of his Stone Sour-ish vocals.
Vol. 3 wasn't bad but like I mentioned I think Corey's vocals were quite weak. Still, I think their first couple albums are the band's best work.