So back around April of last year I picked up a rMB at the Apple Store around the first few weeks they were launched. Took it home, and 2 of the keys were defective and didn't respond similarly to other keys (bottomed out feedback). Thought I just got a defective device. Took it back and swapped it for the same machine, and still had a single key on that machine respond similarly (defectively). Upon returning to the Apple Store, 3 of 4 rMBs I played with on display exhibited the same behavior on some random combination of keys for each model. At that point I felt that I didn't want to pay such a premium for a device that has clearly lacked the appropriate QA as far as manufacturing and assembly. I love Apple, but I felt I'd have a better experience waiting for the next gen model when the problem would hopefully not be an issue. Just received my 2016 rMB yesterday, and I'm happy to report that none of my keys exhibited the defective behavior. Love the machine; fanless, a large SSD, and so light and small. Ideal for me. Back around April of last year, several people echoed similar sentiments regarding the defective key issue on at least 1 key on their laptop. I know friends personally who complained of the issue on their machines, etc. I'm wondering what other people's experiences are with the quality of all keys on your rMBs, especially the 2016 models. Would be interesting to preview, collectively, if the issue seems to have gotten better for the majority of users of 2016 models.