Like many who will either have already bought this album or are considering it, I'm a longstanding fan of both key contributors to the Kingdom of Sorrow project - Jamie from Hatebreed and Kirk from Crowbar/Down. As such I come to it with full knowledge of how brilliant their respective 'day-jobs' have been over the years.
I think the key word in all of this is 'project'. I say that because both guys have said they very deliberately set about having KoS sound different - Jamie wanted something a bit more melodic than Hatebreed and Kirk wanted something a bit more direct than Crowbar. And herein lies the problem; the best songs on the album are where they've failed to achieve this. It's only when you think "hey, that would have been a killer Crowbar riff" or, "wow, I can imagine that breakdown section in a really fast Hatebreed track" does the thing really come alive.
Don't get me wrong - this isn't a bad album by any stretch of the imagination. It is however rather less than the sum of its parts, and certainly the lesser of the two main guy's output recently. After all, when put between 'Supremacy' and 'Over the Under' I know which one is getting played least!
It's a worthy purchase, but if the pennies are spread thinly I'd advise you to start with Kirk and Jamie's full-time bands first.