Magic Knight Rayearth is the newest of Dark Horse's CLAMP releases, after many many delays.
The story itself is described as being "Swords and Sorcery Shojo Action", and there's not really a better way to sum up what it's about: there is an excess of swords, sorcery, and shojo-y girl themes. There's plenty of action, but from the way the girls think, talk and act, it's obvious this book was made for girls. There's also the issue of the ending, which is surprisingly dark for shojo. Of course, there's a MKR 2 to follow up the original story, but the sequel doesn't and couldn't possibly undo the events of the first story. The conclusion of the story gives it some much needed depth that helps it stand apart from competing shojo action series, but the dark nature (as well as the blood strewn throughout the story) means that the story is meant for girls of a certain maturity. If you can't handle an ending that isn't exactly happy, you probably shouldn't read MKR just yet.
The important question comes down to what form the omnibus takes... whether it's a flimsy like DH's Chobits releases, or a heavier, more quality release like DH's Clover and CCS. Obviously, I've named my review thus because DH has gone back to Chobits format. This book is characterized by being entirely too big for it's spine to support, with flimsy covers. Like Chobits, it needs to be handled with care, and I'm disappointed to see that despite there being only 3 volumes in the release, the thickness of the book hasn't really decreased by that much, and is still likely to give you hand cramps just supporting the book while reading.
Ultimately, the format that DH has chosen is disappointing, but the release is still plenty of fun.