Those are the facts, now my mind:
The Black Slim Edition is a simple but stylish and especially flat housing. The green logo like me personally not so, I would rather have had the Raspberry. But it is at least not as bright-glaring as it acts on the images, but rather dark green. The lack of openings can be a curse or a blessing, depending on what one wants to do with his Pi. When no longer required, the relevant connections, the optics are so beautiful and you have less openings through which it can clean dust.
The installation of the Pi is a little tricky, because Jack and the Ethernet / USB connectors are recessed into the frame and block each other. The trick is, obliquely introduce the jack and then lower the rest. Then the board is fully seated but precisely, without unnecessary play or jagged edges. After that, the front wall lower (the piece with the air holes), the top of it and tighten. In the front wall, make sure that the omission is facing down, which is the entrance for the microSD card.
Conclusion: A clean crafted shell whose greatest strength is its narrowness. And when they were 10 Euro has exactly the same price as the regular Black Edition, but comes without rubber feet cooler and (alleged) charging cable, there is a point deduction.