havene123 :
Ok, well looks like I'm going to be sticking with 770s most likely, I might go for a reference model as a second one to go with my Gigabyte WF3. Still open to other answers though.
RICKY! Where's your chicken fingers? heheheheh
Ok, jokes aside, you have one of two choices here that won't be stupid. One choice is to get another GTX 770 and SLI them. If you're going to completely change cards it would be nuts to get an nVidia card the way things are priced right now. You mentioned the GTX 760 4GB, well, if you're only gaming with one monitor, 4GB is a waste of time and money. You're talking at least $315 on newegg.ca for each card. The Radeon HD 7970 has 3GB which is already way more than enough, even in crossfire (trust me, it's what I'm running), one would cost $290 after rebate from NCIX and the second would cost $320 (assuming you bought them together) making them $305 each. So although only $10 less expensive than the GTX 760 4GB, they beat the tar out of those cards, 4GB or not. Keep in mind that these are XFX Double-D's so they carry XFX's double-lifetime warranty. As for crossfire stability, take it from me, it's perfect. I'm running two HD 7970s in crossfire as I type this and I couldn't be happier. Here's the performance difference you can expect:
Quote from [H]ardOCP:
"The Radeon R9 280X was very playable at these settings and stayed ahead of all of the other mid-range cards that we evaluated. The other three cards were not playable at these settings. Although the GeForce GTX 760 turned in higher frame rate than the GeForce GTX 770, we believe this is due to the run through for the GTX 770 having significantly more explosions and tank action present during the data recording."
http://www.hardocp.com/article/2013/11/17/battlefield_4_video_card_performance_iq_review/5#.UowTbOKKp2M
And what exactly is an R9-280X? Why, it's nothing more than a re-branded HD 7970! The only sane way to keep using nVidia right now is to just get another GTX 770 and SLI them. That's really all there is to it. Your GTX 770s would be more powerful than those GTX 760s anyway. Remember, it is said that the bare minimum for BF4 is 2GB, having an extra 1GB is 50% more than minimum. That's far and above what you actually need so paying extra for another GB on top of that and sacrificing performance in the process is just.... well it's what Ricky would probably do and we know just how bright the boys are don't we? LOL
EVGA GeForce GTX 760 4GB - $315CAD
http://www.newegg.ca/Product/Product.aspx?Item=N82E16814130949
XFX Double-D Radeon HD 7970 - $320 (-$30 rebate one one card only)
http://ncix.com/products/?sku=80254&vpn=FX797ATDJC&manufacture=XFX&promoid=1287
PS - Ticats vs. Riders - Could this year's Grey Cup possibly be any more lame?