[Build Help] Which 4gb GTX 770 should I choose?

I’m not sure which card to go with so I come to the only place I know will give me good help. I currently have a GTX 570 1.25GB and think it’s time for an upgrade. I have an Amazon Prime membership so that’s where I will be purchasing the cards from, it seems to have the lowest price and free shipping so I can’t complain. I have two monitors but only use one to game on. They’re both 1080p monitors. From what I understand you don’t need more than 2GB unless you’re playing at 1440p. The reason I want the 4GB version of the cards is because I think the larger memory buffer will keep the cards relevant for future titles. Is it worth purchasing one of these cards or should a save some money and get the 2GB versions. Also is the EVGA Classified really worth 60 dollars more than the Gigabyte card?

Gigabyte GTX 770 OC 4GB Windforce 3X Cooler: $449.99

Newegg: http://www.newegg.com/Product/Product.aspx?Item=N82E16814125462

Amazon: http://www.amazon.com/gp/product/B00CU9GOAO/sr=8-1/qid=1371588738/ref=olp_product_details?ie=UTF8&me=&qid=1371588738&seller=&sr=8-1

EVGA GTX 770 Classified 4GB ACX Cooler: 509.99

Newegg: http://www.newegg.com/Product/Product.aspx?Item=N82E16814130925

Amazon: http://www.amazon.com/EVGA-GeForce-Classified-Dual-Link-Graphics/dp/B00DBPU8B2/ref=sr_1_3?ie=UTF8&qid=1371588873&sr=8-3&keywords=gtx+770+4gb

I have the 2GB Gigabyte card with windforce and I love it. It's a better idea to get whatever card has the better cooler so that it can take advantage of GPU boost 2. If the card runs cooler, it can run faster. Both cards are quite nice and you won't go wrong with either. 

I cant seem to find any benchmarks on what card runs cooler or quieter . I hear great things about both coolers but i havent seen a "faceoff" between both of them.

Also the Classified card is 60 bucks more. I'm not sure what benefit i am getting for the extra cash.

Maybe go with the windforce then? It's a pretty damn beefy cooler so you shouldn't have a problem getting high core clock speeds.

windforce dumps a lot of hot air into your case

i'd get the evga version if i was you

 

but personally, i'm holding out for the asus 4gb

 

I havn't had any problems with it yet and I'm running an 800D with only one intake and my h80 as an exhaust. Can you elaborate?