460 1GB Hawk SLI or 560TI 1GB

I would go with the 460's, SLI in the future with a 1GB card won't be that attractive of an option IMO, some games are already using more than that at 1080p and I suspect more will in the future, and there is a pretty huge performance advantage with the 460's over a single 560ti.

I wouldn't turn down two gtx 460 for $200!!! Go for the 460 performance wise alone compared to a 560 ti.

460 SLI for sure (as long as your PSU can handle it). Main reason is you dont know if next generation will be better in single card configuration than 2 560 Ti in SLI.
On the other hand you do know now you are getting a good deal on those 2 GPUs.

I do wonder if those are 1 gb or 768mb versions thou.

Personally i have a 560 Ti and im waiting for next generation to know if its worth to even SLI the 560 Ti .

The 460s. Since they are Hawks you should be able to get a pretty good overclock out of them ^_^

go for 460 1gb version you will see the peformance it.

I would go for the single GTX560ti. It will be quieter, generate less heat, and use less power. Not all games run well with SLI, and there is always the microstuttering issue. For your resolution and the games you play, you may even find just one of the GTX460's to be sufficient.
Whichever you choose, make sure your PSU is up to the task; a quality 500W unit will suffice for the GTX560ti, 600W-650W for the pair of GTX460's.

I have 2 MSI Cyclone 460GTX -768s in SLI in a rig and they are FAST. That is a great deal for 2 1gb 460's

Definitely the 460s in SLI

Oh, there's no doubt it's a great deal. I'd only buy the pair if I thought one might be sufficient (check benchmarks; for your games it may well be) allowing you to sell the other. Possible problems with multiple GPUs, especially the microstuttering issue that was recently described in http://www.tomshardware.com/reviews/radeon-geforce-stut... make me reluctant to recommend a pair of GPUs, when a single strong card will have none of those issues. There is also the question of power.

I've had SLI GTX 465s for 11 months and only had the microstutter issue with one game that is over 10 years old and doesn't have an SLI profile. From reading the article it seems to be much worse with radeon's than nvidia cards.

I bit the bullet the got two of the MSI GeForce GTX 460 Fermi Hawk OC 780MHZ 1GB GDDR5. Just gotta send in those rebates when they come.

I wish you had mentioned that your price depended on playing the rebate game (and winning it). You may be limited to a single rebate. Here's hoping you get it.