We're on the same page mate, Long Way Down is the pick of the album for me as well.  That song seems to keep building and gets better as it goes.  Find myself singing plenty of the Monster songs in my head all day.

One notable feature is the lack of an all out American rock anthem e.g God Gave Rock n Roll To You.  They way over did these IMHO.

The thing I really like about Monster, if you knew nothing about Kiss, there's no way you would think these guys are as old as they are by the sound of these songs.