Dead Space 2: Computer or 360?

I recently stumbled upon Dead Space 2 on Steam for $40 and I like this price over the $60 price for 360. The catch is that I have never really played a shooter on computer since I have always had a laptop. I do own a gaming machine now though and I am kind of curious to see how it would play with a mouse... Does anybody have any advice or insight to influence my decision?

Dead Space 2

Fellow gamers,

Hopefully I will be picking up Dead Space 2 this weekend. I was a huge fan of the first game and with it's bargain bin pricing I see no reason as to why everyone hasn't played this game. Very few games nowadays keep me motivated and moving along with the story, but with Dead Space I couldn't put down the controller. I even played the game a second time on the hardest difficulty setting. The weapons in the first game were excellent and while Issac's character in the first game wasn't that compelling, I hear that his character is fleshed out deeper in the second one. I cannot wait to pick up the second game and play through it. I'll have a more in-depth article once I play through it.

Also the ads for Dead Space 2 are genius. I have seen a lot more people interested in this game just because of seeing those ads on television.