Love it. Absolutely.
Dead Space 1
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Graphics: 9 (pretty good optimiced high resolution graphics)
Enviorement: 9 (rusty and bloody walls, blood and gore everywhere, space, moebius-like scenery)
Realism: 7 (a bit weird that a single guy can cut 99999 limbs without getting killed, at least in System Shock II you can be killed and replicated!)
Gameplay: 7 ( good and hard, you can barely move with the heavy engineer suit but too damn slow to run)
Difficulty: 8 ( balanced)
Plot: 9 ( pretty damn good)
Non-playable cinematics: 7
Playable cinematics: 8 ( that mutated worm-tentacle made me almost shit my pants two times )
Dead Space 2
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Graphics: 9 (different but still really good and optimized)
Enviorement: 8 (a colonial space city being infected? looks really nice. But it's a lot less scarier than DS1)
Realism: 8 (You can hear Isaac and see his head which makes it quite more realist than DS1.)
Gameplay: 8 ( In my opinion, easier than DS1 but definitely more playable. You can fight with your hands, hack locks and even fly in zero graviti, which made me really horny.)
Difficulty: 6 ( A lot of less scary and harsh than DS1)
Plot: 7 ( Not bad. I liked it. Being in contact with living beings all the time makes the thigs much easier)
Non-playable cinematics: 8 (starting scene before Isaac gets free is awesome)
Playable cinematics: 9 ( Just awesome. The railway scene, the big gorilla that jumps behind you in space and crashes a ship, the WHOLE ending scene. )
Dead Space 3
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I did not finished DS3 yet. It's about 70% done.