The M-edge looks a lot nicer than the armor case cover. And if I was gonna buy one , it would keep the 505/700 safer from falls and other mis-haps than the orginal case that comes with the ereader.
If you keep the 505 in home on table and pick it up to read, than M-edge is the beautiful way to go.
If I want to put my 505 in cargo pants/backback/ leave it in car, or take it out and about, the armor case is the only way I go. I did use the orginal cover and place it in zip-locked baggie , but realized it just is not as protected , since this thread is about dropped and broken 700.
I know I would want to know all the options in buying a case for these fragile glass screens , and Andybaby and me both have come up as others have with better cases than stock one.
Since the M-edge cover has openings on bottom/sides/and top of reader, just be aware that stuff can come into the ereader through those openings. If you gonna get the m-edge I don't know if a ziplock baggie would cover it and fit in cargo pants. I know the armor can fit in my cargo pants, I think the m-edge is too big to fit in my cargo pants from the pictures of it, I'll let others say if they can put it in cargo pants or not.
If the m-edge had a zipper that closed it , then you could have beauty and safeness!
The pro's of the armor case:
The zipper and the hard cover and small and very light weight form factor is what convinced me to Armor IT!