GTX580 to GTX970 (thanks to all)

I'm having overheating problems with my EVGA GTX580 (it's almost 4 years old), i've ordered some thermal pads and paste to attempt to squeeze a few more weeks/months? of life from it but i'm not holding out much hope. I don't need advice or links for cards but i do need advice on card makers. Apart from EVGA i dont know much about the miriad of companies now making video cards so if some of the tech heads on here could point a guy in the right direction it would be much appreciated.

[edit]
ordered the Gigabyte GTX970 G1 (also get Witcher 3 AND Arkham Knight FREE), thanks to everybody who took the time to post, below is a little something for all y'all, hope you like.

http://www.steamgifts.com/giveaway/CWGHg/planetary-annihilation

http://www.steamgifts.com/giveaway/d7y7q/stalker-call-of-pripyat

http://www.steamgifts.com/giveaway/noLHK/of-orcs-and-men

http://www.steamgifts.com/giveaway/bRXBt/it-came-from-space-and-ate-our-brains

http://www.steamgifts.com/giveaway/im2jp/super-motherload

http://www.steamgifts.com/giveaway/nTwqV/merchants-of-kaidan

http://www.steamgifts.com/giveaway/X2smO/the-original-strife-veteran-edition

http://www.steamgifts.com/giveaway/d0q6M/letter-quest-grimms-journey

http://www.steamgifts.com/giveaway/sLtfU/survivalist

http://www.steamgifts.com/giveaway/vTUB4/spark-rising