I got my hands on the demo. Mainly coz I wanted to see the intestine effect they did. Watch when you kill the centaur, his intestines spill out!Also when you rip off that guys head, there are some arteries(I guess) that wobble around! And Kratos gets covered in blood when it sprays on him. I am tempted, but I can wait.
I might get the first 2 on PS3 first.