I love what I've heard so far. Might even beat out IKSSE3 for me. Side note: I never understood the hate that Black Rainbow got. The production was a bit botched, sure, but the songs themselves weren't bad at all.
Guns of Summer I didn't really mind, but I didn't like The Black Rainbow at all. Didn't feel like it really went anywhere. I guess I was expecting a bit more of a closing suite considering the ones on the albums before it.