I bought red leather originally, big mistake. The leathers get marked up way to easily, and are annoying because they actually require maintenance. If you take your nail and lightly drag it against a leather smart cover, and I mean lightly, it leaves a white mark that doesn't go away. Also, if you fold the damn thing it gets the wrinkles and crinkles that leather gets, and it looks horrible! I mean, why make something made to fold out of material that's easy to wrinkle/crinkle? I had my red smart cover for an hour, and it was all marked up. Now I suffer from a pretty bad case of OCD, so I panicked and tried to clean it with water. Whoops, left a nasty dark stain in numerous places. Than I panicked some more and tried to clean it with water and soap, whoops, coloring removed and now left light spots all over. Yes, you can probably get like leather cleaner, but I'm sure that can't get all the marks out, and why go the extra mile, ya knows

?
So, I went back to the apple store and returned the hoe. I even made one of the employees take out a few different colors out of the boxes to try the test and marks, marks, marks. I really liked the colors leather had to offer, but they all fail to the scratch test and white marks everywhere on a brand new item drives me mad.
I ended up with grey poly, and I'm extremely happy with it. I can scratch it all I want, as hard as I want, and no marks! If it gets dirty, I take some water, soap if necessary, and clean it off. Beautiful once again. And not to mention, the grey matches the silver on the mark, sorta, so it's a nice combo.