I was skimming the topics on here and noticed how active this one is and thought I would share my experience.
Since the Air came out, I have gone through about 7 of them.
#1. Ordered on launch day from Apple.com, received and used for a few days, Decided I wanted the mini, returned it. The screen on this one had perfect color saturation.
#2. Re-bought the Air because of color gamut issues reported about the mini. Screen on this one was again excellent, but I experienced frequent self-reboots (not app crashes), exchanged for another one.
#3. This one also self-rebooted, which convinced me it's an iOS 7 bug. (Let me know if any of you have experienced this). However, the screen on this one did not have good saturation. It was more yellowish and most disappointing, blacks were not deep. Exchanged again.
#4. Screen on this one same as last one, exchanged.
#5. Screen is perfect, however, there is a small yet noticeable chip on the chamfered edge. Really had to convince the manager to let me return this one (she said "no iPad is perfect" and said this would be my last exchange)
#6. Screen is perfect, but again, a graze on the chamfer out of the box. I couldn't stand this. I went to the same local Apple store when the previous manager wasn't around and exchanged it again.
#7. FINALLY. I don't like saying "perfect" because it makes me sound like a "perfectionist" (which some call me, but I don't believe I am) but this iPad Air I have now is perfect. The aluminum and glass are quite flawless, and the screen is ravishing.
A person could call me crazy for exchanging my iPad this many times. But I'm not. Apple should deliver a fairly flawless iPad out of the box, not one with defects. I'm paying a large premium for a 128 GB 4G model for one thing, and the materials, while attractive, are not expensive. If they're going to make major profit on me, I want a "perfect" iPad.