Maybe you have read my posts and questions concerning this device I have recently posted to this thread.
I can tell you, that I really WANTED this phone and that I was willed to like and enjoy it!
I finally got a Find 7a from eBay for a very good price but I shipped it back after two days of usage because I couldn't live with the yellow tint at the bottom of the screen. It really disturbed me although it was only visible when the screen was showing something that was white or gray.
In my opinion it is a shame that they are able to design such a premium device (the rather loose hardware buttons and poor lighting of the capacitive keys left out) and then fail with ALMOST ALL of the displays so hard.
My impression after using it for about two days:
Gorgeous design, premium build quality except the hardware buttons as mentioned above. Capacitive buttons were poorly lighted and hardly visible under bright daylight, unfortunately.
I only did a few shots but the camera impressed me due to its speed and sharpness.
The phone operated fast as hell. ColorOS 2.0.1 lacks some features/settings here and there but I still enjoyed it for being different and much more innovative than many UIs out there! Good concept that needs some more love when it comes to the details - and KitKat, of course.
I felt that the battery life was not better than average but it should be alright with fast charging (which worked and was simply stunning, I will miss it).
The vibration intensity felt rather weak to me - maybe just a minor thing but it made the device feeling a little less premium for sure.
Conclusion: The faulty display was definitely the one and only dealbreaker for me. The buttons could have been better, as well as the vibration intensity and battery life. Software was not perfect yet but promising.
Everything else was absolutely top-notch - not to forget that this phone is almost a gift compared to other high-end devices!
Enjoy your Find 7s, I wish you good look with the software support! Hopefully you will get KitKat and further updates.
If they fix the display issue then I can imagine to buy one again because it is a strong device that does the important things right (if not better then some of its more expensive competitors) - otherwise I am out. It's a real bummer, OPPO. Stop wasting potential.