Love the article!
I'm really happy with my 2 xtreme's. Last month I cranked our A/C to 64f, closed all vents in the house except the one over my case and set the fans to 100%. I was able to game with the 2-2.1ghz speed all day at 4k. It was interesting to see the GPU usage drop a couple % while fps gained a few @ 4k and able to keep the temps below 60c.
After it was all said and done though, the noise wasn't really worth it. Stock settings are just barely louder than my case fans and I only lose 1-3fps @ 4k over that experience. Temps almost never go above 60c in a room around 70-74f. My mobo has the 3 spacing setup which I believe gives the cards a little more breathing room.
The zotac's were actually my first choice but gigabyte made it so easy on amazon and all the extra stuff was pretty cool.
I ended up recycling one of the sli bridges for my old 970's since my board needed the longer one from nvida. All in all a great value in my opinion.
One bad thing I forgot to mention and its in many customer reviews and videos and a fair amount of images-bent fins on a corner of the card. The foam packaging slightly bends one of the corners on the cards. You see it right when you open the box. Very easily fixed and happened on both of mine. To me, not a big deal, but again worth mentioning.