Idd. Santa Monica Studios are surely up there with one of my favourite devs alongside Naughtydog. Their games are consistently good and they're getting better with every release. The only game by SMS that disappointed me was Ascension and even then it fairly good; if not uninspired prequel.
But yeah, GoW is their best title yet and recently completing the game again hammers in that they are (arguably) in a league of their own. That game is almost perfect.. its like the Resident Evil 4 of the last generation imo.