opinions?

Wait. If you're not dying to buy it, just wait for it to be discounted.

the 360 version looks messed up if that's what you're interested in.  If you want it for pc i'd say get it.

My opinion: buy it.

It looks cool enough, and sorta up my alley, but it's certainly not grabbing me in any way that I'd need to buy it now. 
 
Plus from what I've been told it's a massive resource hog and I don't think my computer would really be up to snuff at the moment.

I would say definitely buy. Especially the PC version. If you have to go for the 360 version it doesn't seem bad, just inferior to the PC version.

Do you like atmospheric shooters, are OK with a few minor gameplay design flaws, and need a game to play right now? 
 
If not, then wait for the discount. 
 
At the moment I see this game as an experience in Russian game design philosophy, and an insight as to where Russian literature themes have been going recently. The game itself is more about the experience and atmosphere than the individual mechanics that make up the gameplay.

Well, I love the game. So I would say buy it now.

DISCOUNT, always better to save your money, and if you buy it now in 5 months you'll see it for 20 bucks somewhere and get pissed off.