I really disliked it at first, but it's definately starting to grow on me. It's cool to have something a bit different and the guitar work is great.
Vocally/lyrically they're definately missing a second songwriter (in addition to Cain) though...Arnel just isn't going to be able to contribute what Perry or Augeri did in that regard. Some of the lyrics are inexcusably bad, and the songs lack that "Journey" melodic hook.
I still like Arrival better, but probably would put this ahead of anything else post-Perry.