Hey after hearing about Dead Space on the bombcast and stuff a couple months ago ive been wanting play it for awhile now. Ive held it off, but mostly because i don't know whether it's too short to buy, or too good to rent. 
 
What do you guys think? Rent of Buy?

buy, i found it for $20 at a eb games, its a fanastic game to add to your collection

It's short but I guarantee you that you'll play it more than once. I played it 3 times through.

Go buy it, the game is pretty cheap now and its definitely worth the cash

i rented it and got the platinum in less than a week

Rent unless you want 1000/1000 and can't play for 20-25 hours in the span of your rental time (so if you're only renting for 3 days and want 1000/1000, you probably won't be able to get it in that time, etc...).

If you like horror games... BUY IT

BUY. You can find it for a good price ($30 or less) and you will want to play it multiple times. It is also one of those games that are a good demo for sound systems. I would really consider buying it because it is also a pure, kickass game. My 2nd favorite of last year.

Try the demo, it's an awesome game

Neither. 
 
Shoot me.

 Buy it

I'm in the same boat and I think I was just convinced to buy it.

I'd buy it, but not at full price. It's a great game, but, much like Bioshock, there's not much replay value. 

Neither.
 
Download the demo and find for yourself why it's bad and bland.

" Neither.  Download the demo and find for yourself why it's bad and bland. "

Buy
It's an awesome game. I'm now playing on impossible difficulty and it's HARD! It isn't very scary with normal difficulty but with impossible you get a real sense of panic and despair. I love it! :)

I'm actually wondering the same thing in my head (rent or buy), to those who would say rent, what about it make it not worth the purchase?

if you like resident evil till the fourth and movies like event horizon or aliens, you're in for a treat. 
 
But if you liked resident evil 5 co-op, dead space doesn't have any, 
 
But it's probably the best horror game for xbox 360/ps3.

Buy it, since regardless of your feelings of it it's cheap enough that it's a better deal to buy it than the $10 rental.

Rent for sure. Wasn't into it myself, though.

Buy it, for sure. Seriously, one of my favourite games. Yes, ever.