I am in a situation right now where I will have to do a lot of typing on the go. I can see myself doing work in a bus on regular long distance (1.5 hours one way) commutes, as well as random benches, subways or cafes. My work will consist primarily of translation work; these will be primarily of scripts for TV shows so I am envisioning a two-window split screen scenario where one half will be the document in question and the other half will be a web browser with a dictionary page and other pages for when I need to look stuff up. Depending on the situation, I may need to fire up some video footage to watch or listen to relevant parts. However, my other requirement here is that whichever way I go, the device has to be compact. Despite being on the lighter side, my MBA 13" is definitely heavy in its own right when I pack other things in my bag. This has brought me to the devices listed in the title, though there are unique aspects for each device that attract me one way or another. I'm seeking advice from other users because of that. I'm also considering the iPad Pro simply because it weighs as much as an iPad 4 and an iPhone 5 put together, which is still much lighter than a MacBook. Vision-wise, I'm on the decent end. I don't need any glasses (yet) and I don't have to squint at small texts when the device is at standard distance (seated lap to head). I'm also in the last semester of my undergraduate studies at the moment, so I'll also be using this for making Keynote presentations. The following list of devices also features what I perceive to be advantages and shortcomings. I have zero experience with them other than briefly trying them out at Apple resellers, so please correct me where necessary. 12" MacBook Pros: - Thinnest and lightest among all MacBooks - Full-fledged OS X - Easy Windows availability (possibly necessary because I live in Korea, the Land of ActiveX) - Retina display - Excellent battery life (same rated as 11" MBA) - Can utilize external battery pack for extended outside usage - More screen real estate compared to MBA Cons: - Underpowered for its price - $100 more expensive than 11" when specced to 8GB RAM/256GB storage (ignoring CPU) - Requires dongle for USB peripherals - Requires tethering for Internet access (I have an iPhone 5C and a heavy data plan that allows tethering, but this would sap either the MB's battery or the iPhone's battery) - Requires separate video-out dongle for monitor-out 11" MacBook Air Pros: - Full-fledged OS X - Easy Windows availability (possibly necessary because I live in Korea, the Land of ActiveX) - Excellent battery life (same rated as MB) - USB ports for flash drives - More CPU oomph - Cheaper Cons: - Seemingly on the verge of being phased out (completely subjective) - TN display is not very outdoor-friendly (this was my experience with my 13" 2012 MBA, and reviews seem to show that the latest MBAs still use the same screen) - Non-Retina display - Lesser screen space compared to MB (1366 x 768 vs 1440 x 900 or higher) - Requires tethering for Internet access (same con as mentioned above) - Requires separate video-out dongle for monitor-out (but I already own the dongle for the 13" MBA, so I can reuse it here, so not a con - mentioned in case someone were to bring it up) - No option for comparatively affordable external power compared to the likes for the MB iPad Air 2 and Pro Pros: - Lightest machine among all, even when a Bluetooth keyboard is included - Retina display - Excellent battery life (potentially the best among the three) - On-demand LTE connectivity (if I go the iPad route, I am definitely getting the cellular model) - More versatility in terms of usage (I game and read more on my iPad than on my Macs) - Cheapest among all (though excluding Bluetooth keyboard; Air 2) - Can use onscreen keyboard if I'm standing Cons: - Productivity software available for iOS have fewer features compared to OS X counterparts (though I do not make use of any "advanced" features - just italics, bold, underline, strikethrough, and tab adjustment) - Requires a separate Bluetooth keyboard, and that too something that'll let me work on my lap - something akin to the Clamcase - if I want to really do mobile work - iOS 9 split-screen multitasking support is still a major question mark; I have no idea whether this applies to all apps or not - Need to remote access a Windows machine in case I need something exclusive to Windows - (Pro) The Smart Keyboard doesn't look very touch-typing-friendly (again, speculation based on looks and impressions) - (Pro) LTE model price is extremely close to the MBA At this point, after listing out my thoughts, the iPad Pro and the MBA 11" are in distant third and fourth places, while the iPad Air 2 and the MacBook are on the verge of being on the shortlist. What are your thoughts? I've previously done extensive work on both my 13" MBA and my iPad 4 with a separate keyboard. While the iPad 4 had required some more roundabouts compared to the MBA, it was still doable enough as is, so I'm not diving into productive iPad usage blind here.