building a new pc what gpu should i go with?

Well I just got my new CPU and Mobo and with the holiday around the corner i'm going to treat myself to a new GPU (current: Nvidia GTX 560 SC 1GB) I have always bought Nvidia cards but i'm always open to new ideas so hopefully you guys can help me out with making a decision on what im looking for.

1. As people have read in my previous post I want to futureproof as much as possible

2. Be able to run newer games and games coming out in the next year or so on max settings without any issues

3. Want w/e I get to not only have good performance but also good quality I dont want to cheap out I want something that is going to last.

What's your price range?

500, 600 at the most.

For a single GPU? Sheesh...you can get the most powerful single GPU cards out for much less: http://www.newegg.com/Product/Product.aspx?Item=N82E16814202008

wow dude that one you linked is better than the 680GTX? Im asking because i dont know much about ATI cards errr AMD (see how long it's been since i was last in the loop)
another question I should be asking is should I be going for a single GPU setup or looking into SLI? From things that I have read people say SLI is good for when you plan on going to resolutions beyond 1920x1080 or for multi-monitor setups. I don't plan on ever having more than one monitor or going bigger that 24 inches on a monitor. The one thing I do use alot however is my tv which is a 39 inch i often hook it up to my pc to play games that are compatible with a gamepad.

7970 and 680 are about equal, after the 12.11 driver update.

Resolution matters, not size. I've never seen a TV that's higher than 1920x1080 either...a single 680/7970 is going to easily handle anything at that resolution.

Only things bigger than 1920x1080 are expensive 27" computer monitors that are 2560x1440 and expensive 30" monitors that are 2500x1600, or multiple screens.

besides price are there any difference between these two card ?

http://www.newegg.com/Product/Product.aspx?Item=N82E16814202001

and

http://www.newegg.com/Product/Produ...m1132X509988X286b2765e69af9009b75626509b1c43e

i know this is off topic but you may know the answer to this question figured why make another thread when i can just ask. I just recently bought the i5 3570k (decided to go with that vs 3770k) as of right now i have the:

coolermaster hyper 212+ heatsink
http://www.newegg.com/Product/Product.aspx?Item=N82E16835103065

i was thinking about getting the

KUHLER H2O 620 Water Cooling System
http://www.microcenter.com/product/391500/KUHLER_H2O_620_Water_Cooling_System

which is better for cooling or are they both pretty much equal?

Probably a bigger heatsink and a upgraded power delivery section to the GPU...but it's the same core underneath. You might get higher overclocks with the 2nd one but if you're gaming and not benchmarking, it's not worth it.

620 is better, but not by much. The all in one liquid coolers are only worth it if you go for the high end ones (Antec 920, Corsair H80/H100i). Below that, they're still beat out by air heatsinks.