It looks stylish, because the plastic is slightly transparent. Thus one has a black MBA, in which the white shining apple is really cool to advantage! But that's just the cool side effect.
The Case even protects the MBA very good. All openings are properly accessible, only the 2nd micro is almost hidden on the side, but only almost.
Installation is simple and the two parts hold very well. Did it also settled ever again, is not easy, but it goes with the correct grips.
In other cases I've read that the brackets on the case shall have the effect that the MBA is no longer close properly, this is not the case with the Artwizz. Is all well (dust) tight.
The Case makes the MBA a bit heavier, which "is even an advantage in 11. And so it goes on easier when you with just one finger pulls the display facing up. Without the Case, it is me often happens that the MBA complete with was pulled up.
For me, the only criticism that the rubber feet are a bit too large and thus the MBA is no longer quite so flat on the desk. Is not annoying, but it is striking and makes the flat design a little bit "broken". On his knees (couch) but that does not stand out.
Now I'm curious times on the long-term test. So far I would say the case is worth the (proud) price. Whether that will remain so in the long run remains to be seen. Anyway, I'm more confident than in the 15-parts made of hard plastic with Artwizz.
Addendum of March 2015:
I have the envelope now about 3 months off, use the Air every day and I have to say that the money was definitely worth it.
The case is robust, has no flaws, holds perfectly and of any cracks at the edges is nothing to see.
So my tip: Give out the money and save you the hassle of cheap cases for 15! Quality has its price up :)