The best, in my opinion.

Personally, I started buying a MOSHI accessory when I buy a macbook (Moshi 99MO021901 Keyboard Protector for MacBook (watch plusieres models for this protection for a MacBook laptop keyboard and one for external keyboard), then sticker to protect the lower part of the macbook perspiration and scratches), and I was completely satisfied.

But for the shell I do not know moshi had one too, so, I bought a speck (full view, big buzz on sites, all the world advises), and although néni.
I immediately referred the speck, too heavy, and I found it really ugly, and I received it with stripes on top of that.
This time the moshi has his name that approximates the ugly word (and I find the word moshi nice personally).

IN SUMMARY:
Best case for macbook pro 15 inch retina, lightest, snaps perfectly in 2 seconds, perfectly fits the macbook, solid feel, and very pretty.
It may surprise before putting it seems all is not transparent blurry, but once set, the blur disappears to reveal the original MacBook design (it's a bit like the fuzzy windows or you get your hands stuck on it and Seer hand).

Honestly, there is the price which is high but compared to the speck please.
Again, weight, weight, weight for those who travel it is our enemy.
Congratulations moshi keep it up i like :)