To be honest the Gray chapter is 100% my favourite album, I think that is in pretty much every way the most complete they've ever sounded to me.
Like some songs you can tell Corey has something to say, so they build a song around it, or Jim has some ideas for the bridge an chorus so they work it out from there, but Gray chapter just seems such a group effort and tight to me.
Think We are not your kind has alot of aspects of that, an there is some really good musicianship on there but it'll always stand out because of Unsainted and Nero Forte.
As a whole though I don't think they've ever produced anything you really can say is bad, it's just growing an developing with age I think, there is loads more rhythm starting to come out in these past 2 albums, an less like tribal drum driving bangers.
Wait and bleed, Left behind and Eyeless will always have a place for me though, they are just anthems.