You're looking at the Early 2014 Haswell 11" Macbook Air. The S200E has been out for over a year now; you're not even comparing apples to apples. I'm going to roll with
the mid-2013 Air even though that's still newer than the S200E and thus is still not quite fair.
How is my S200E better than a mid-2013 Macbook Air?
Price: $510 ($430 for the S200E + $80 for a 120GB SSD) vs. $899 = I paid $389 less. I can buy another S200E base unit for that price today.
Physical attributes: S200E is thicker and heavier than the Air but is still a solid aluminum chassis (other than the rubberized bottom) that doesn't tweak, crack, and break as easily as the Air; the rubberized bottom also makes the unit much less slippery overall. Servicing the S200E is also very easy. The Air might be a little lighter, but in a backpack full of other stuff, why complain about an extra half a pound, especially when it means a much sturdier unit?
CPU: The Air is a Haswell i5-4250U; the S200E is an Ivy Bridge i3-3217U; this obviously makes the Air's CPU more powerful (
PassMark: 3419) than the S200E's CPU (
Passmark: 2292). However, my purchase was partly based on picking a low power consumption laptop to attach to a set of solar panels, not on maximum CPU performance; that i5 is 15W TDP while the i3 is 10W TDP (1/3 lower). I don't feel bad about paying $389 less for the slower CPU though.
Storage: The S200E came with a 7mm 500GB hard drive. I upgraded it to a 120GB SATA-III SSD. My final price includes the part cost for that SSD. Its 8GB less than the Air's 128GB PCIe SSD and the performance between the two in real-world usage is probably identical (though the PCIe SSD shows better raw read speeds in simple benchmarks). Ultimately, the SSD differences are insignificant. The S200E comes with a portable slim USB 2.0 DVD-RW drive; the Air doesn't have an optical drive at all.
Ports: Both have SD card slots. Air has 2x USB 3.0 ports and I wouldn't mind having that on my S200E, but the S200E has 3 total USB ports, so I can plug in my mouse and USB 2.0 microphone and still have my USB 3.0 port free for my USB 3.0 external hard drive or flash drive when needed. Other than having more USB 3.0 ports, the Air clearly loses on ports vs. the S200E: no HDMI, no ethernet, no VGA, one less USB port. Sure, it has Thunderbolt, but Thunderbolt is useless without expensive stuff to plug into it (remember that $389 I saved? Tack on a $29 Thunderbolt network adapter add-on to that if you like.) My HDTV and 28" monitor have HDMI; does your HDTV have Thunderbolt? Nope. Does your sub-$300 28" monitor have Thunderbolt? Nope.
Input: ah, yes, Mac users love their trackpads...I hate to tell you this, but it's just a Synaptics ClickPad. The S200E has an ElanTech version of the exact same thing, and guess what? It works just as well. It detects when you're pushing to click and doesn't go haywire and move your pointer while clicking (as early PC ClickPads tended to do), it has a heap of multi-touch gestures from the factory and those gestures are all configurable, and it tracks wonderfully. The keyboard has great tactile response and even looks like it was taken directly from a Macbook Air, save the lack of cloverleaf and apple keys. The two computers are on equal footing regarding input devices. The S200E has a touchscreen as well, but fuck touchscreens.
Display: The panels in use are apparently identical; I doubt there are many choices for a thin glossy 11.6" LED LCD at 1366x768.
Conclusion: I paid $389 less. I sacrificed 1/3 of the CPU power but got 1/3 the CPU wattage back in exchange. I only got one USB 3.0 port but I still have more USB ports. I have HDMI and VGA outputs. I have an equivalent keyboard and touchpad experience, an equivalent 11.6" display, and I can actually plug a network cable in without buying an external adapter. I got a free USB DVD-RW with the S200E. I don't have to worry about the S200E being damaged just because the cat decided to walk on top of it while closed or because I set down the backpack a little too fast. This truly is a better MacBook Air than a MacBook Air.