Apple MacBook Air MJVM2LL/A 11.6-Inch laptop(1.6 GHz Intel i5, 128 GB SSD, Integrated Intel HD Graphics 6000, Mac OS X Yosemite)

I use my Macbook Air as my secondary computer for taking out to class, coffee shops, libraries, etc. In that role, it functions really well. It has adequate performance to go out and type, build spreadsheets, or put together a presentation easily and comfortably.
The form factor is a compromise, though, and some parts of my work really can’t be done comfortably on this computer. Running Excel, Word, and having multiple PDFs up in Preview, along with a web page, for example, can really tax the processor for one and is awkward because of the small screen for another. I run a desktop iMac at home for those kind of applications, though, and made the choice in getting this laptop to prioritize having a compact, inconspicuous device over its bulkier but more powerful cousins.
The new iCloud features in Mavericks make using two Apples very easy. Back to My Mac lets you easily and quickly move documents and folders between computers. This functionality has been in OS X before, but is very robust and useable in Mavericks.
Overall the Air is due a spec bump from Apple, unless they phase it out in favor of the new Macbook. I think if you are looking at the Air 11, you likely have made up your mind to get an Apple and will just decide between the Air, Macbook, or Pro. The Air 13 and 13" Pro have negligible size differences, although the Air’s tapered form factor exaggerates the difference in thickness (the Pro is in fact slightly thinner than the Air 13 at its thickest point), but the Pro offers much better performance. If you want extreme portability and compactness, then you will probably look at the Air 11 or the new Macbook. I have tried but not owned the new Macbook, and it is a great machine, but I could not tell enough difference in performance or form factor to justify the 50% markup on the Macbook from the Air 11.
If you want a Mac for very basic computing or web browsing or as a secondary/portable device to pair with a desktop, I think this is still the best choice. If you want a Macbook as your only computer and need to do work that requires running several programs at once or anything involving graphics and video, then you should absolutely skip the ultra-portables and go to the Pro. For my needs from a laptop, the Air 11 is the best choice among the current Apple lineup.

I have been a PC user since the early ’80s (starting with DOS and thinking Windows 3.1 would never catch on 😉 ), and after buying an iPad and iPhone and being impressed with their quality and the iPad’s "fast wakeup", I decided to replace my four year old netbook with the lighter, thinner 11 inch MacBook Air.
PROS – excellent materials and quality, clear display, small size but full size keyboard, weight, instantly turns on when opened, good battery life, backlit keyboard, silky smooth trackpad, simple "multi finger" controls, fast processing speed and recharging
CONS – Using a Mac requires a learning curve for PC users. Having the iPad and iPhone made the transition easier, but the OS for the iPad and laptop are different enough to cause frequent headscratching when it comes to finding files, programs and how to accomplish tasks that are second nature with my PCs. In light of that, I have determined that PCs are from Mars, Macs are from Venus.

After using it on a week long trip, I am figuring out how to make it do what I want, and have progressively fewer frustrations accomplishing what I need to do. I most appreciate its size, weight and "instant on" and fast recharge time, and recommend it for a small lightweight portable computer.

I really enjoy my new MacBook Air. I purchased this computer shortly after my old toshiba satellite started having too many problems. I have only had this laptop for a few days but I am 100% happy with the purchase. One of the main reasons I bought this computer was for how wonderfully it works with the iPhone. I am brand new the Mac OS but so far I am really impressed. I came from using windows 7 and I must say the built in apps that come with this laptop are amazing. It literally had everything I needed. A messages app for receiving and sending texts, a mail app for syncing all mail accounts, instant access to all contacts on my phone, a useful notes app, and a reminders app which I find useful for prioritizing. Further more I thought it was really neat how OS X comes with a built in feature to encrypt your drives. Performance wise it is pretty fast. I use it mostly for web-browsing, netflix, and writing and I have not seen any issues due to the hardware. The hard drive isn’t very large but I don’t plan on storing anything too large on it. I use an external hard drive for my mass storage anyway. In terms of design it is beautiful. The backlit keyboard looks amazing, the laptop is incredibly thin, and very light. My only major concern when purchasing was the screen size. I was concerned that 11.6" would be too small. (I did not check it out in stores before purchasing) However after starting it up my concerns were put to rest. The screen size is just fine for someone who uses it for the purposes I mentioned above. (I do plan on purchasing a thunderbolt to HDMI cable to hook up to my tv though)

To sum it up:

Pros:
-Beautiful design
-Long battery life
-Packed with useful apps
-Syncs perfectly with the iPhone

Cons:
-No HDMI port
-The news app from the new iOS is not available for OS X (yet?)