Hi, I thought folks here would be interested in my alternate opinion, I bought the rMB (1.2Ghz 5Y51 / 512GB SSD) on opening day, and had it for a few days already. I'm returning it, here's why. I'm coming from a 13-inch MBA MID-2012, 1.8GHz Core i5. 8GB RAM / 256GB SSD. Plan was to replace it, and it is my one and only machine. I use it for business. I am a professional in the tech business, an engineer, but not a developer. I run MS Office, Chrome (yeah I know!), and Parallels for some Win7 apps (eg. Quickbooks). I also sit in random places around my home, not at an office desk. I don't use a large monitor and keyboard in any kind of "docking" scenario. My notebook is it! 1. Performance. Too much UI lag on the rMB, even compared to my mid-2012 MBA. Running Parallels really bogged it down. Changing screen res didn't really help. Even scrolling in Outlook for MAC (v15), felt too laggy. Swiping between desktops (even without Parallels running) seemed not as smooth. 2. Keyboard "too small". I know, it's not smaller... but it is for me, because where I place the palms of my hands on my MBA, I USE that aluminum Realestate. Okay, I'mm not a touch typist of the traditional ilk, I have my own methods, but where I place my hands on the rMB, they are on the edges of the device, and those edges are sharp feeling. When the device is on my lap, or im in some other position, I just cant get quite as comfortable with where my hands sit. Having a place to rest them on the MBA is nice. 3. Magsafe. I love Magsafe. my dogs rip the power cord out too often as it is. A life saver. 4. Bundled power cord is too short! Does not come with the extension that my MBA did. Can't sit and charge in most places. And the battery life wasn't that great on the rMB (Chrome!) that I felt like I didn't need to normally sit with the wall adapter plugged in. Normally with my mBA I sit with it on AC all day. I know this can be fixed with a purchase of the extension cord, but it just annoyed me as an out of box experience, and one more darn thing to buy. 5. Cost, basically, given the above issues, I just don't find the VALUE in replacing my mid-2012 13" MBA with this device. The rMB is NOT faster and its harder for me to type on. If I was coming from an older mBA or an 11" MBA, I'd probably feel differently. To me, it's not a big enough jump to make it worth the upgrade investment today.