which gpu to pick

i was looking at HD Radeon 7870s and i found this http://www.newegg.com/Product/Product.aspx?Item=N82E16814103208 at $279.99

and i also found this http://www.newegg.com/Product/Product.aspx?Item=N82E16814129262 at $409.99

what is the over $100 difference??? im really trying to stay below $300 on a gpu so is the $280 DIAMOND good? or should i go with this

http://www.newegg.com/Product/Product.aspx?Item=N82E16814125418 for $299.99

there are other cards i would consider, there are a few HIS, VisionTEk, XFX, Sapphire, and PowerColor cards under $300

if you want me to list any of these brand cards just ask and im also ordering from newegg so you can look on there if you want. also instead of the 7870 is the GTX 570 good? from what i have seen it is a little less powerful but only by a few frames, it is also about $40 cheaper. what im asking is $40 more ok for a few more frames, or should i just save the $40 and go with the 570? thanks

That $400 card is a special multimonitor card with six mini DisplayPort connections. The other two cards are slightly different, the more expensive of the two is factory overclocked with additional cooling, the less expensive card is a reference design. As for brands, I usually go for XFX when it comes to AMD cards due to their warranty. When comparing the GTX 570 to the 7870, the 7870 is a little more powerful. As for whether or not it is worth it, depends on your cash on hand, along with your personal preference. 60 frames per second is the sweet spot for most gamers.

haha ok so i made the right choice, the diamond, i dont know if i looked at it right but i swear it came with a 5 year warenty? i just ordered the build i had in the other thread of mine and i just changed the gpu to the one you recommended on the amd build and the psu to a rosewill 80+ gold, modular for $100. so thank you so much for all your help DJBPace07, im really happy with my decision

I tend to prefer Saphire or ASUS cards myself, they always seem to last the longest. Im glad XFX cards have a solid warranty-in my opinion you usually need it lol jk. The diamond does indeed have a 5 year warranty and should be a nice card for you.