First off i must say that this argument is a fanboy discussion. I myself own a system based on i7 3770k and sapphire reference hd 7970. I have only had the driver issue when i first installed the base driver which came with a CD inside the box. However the first driver update i have done solved my problem. It was the driver crashing issue not a big deal at all. I didn`t even know they had that already solved. After all, they did the latest update mostly for crysis 3 since it fell under 25 fps with max graphic details everything maxed. I did the update and this was some how resolved. It is absolutely playable.
Secondary. I agree that Nvidia has better drivers because of gtx 680 is a less powerful card but with its driver it can catch up 7970`s performance. I am talking about the gpu`s specification as in transistor count, memory bandwidth and vram amount. But after all 7970 is a cheaper card. It gives more performance than gtx 680 for the most games. It has better specification. This leads me buying a 7970 instead of a 2gb 256bit gtx 680 for futurewise. I have another system based on a i7 950 and nvidia gtx 580 on it. In 2011 nvidia was better. But 2012 amd was a better option instead of nvidia gtx. 2013? we`ll see about that.