Got mine last week
I recently purchased both the slim and the magic case from amazon sellers. I used the Magic for about a week and a half before returning it due to the problems i ran into with the glue wearing out around the clasp. The Yoobao Slim is smaller, less prone to problems closing, the front flap folds much nicer around the back, and though it offers fewer positions for typing or viewing, its just a much better all around case in my opinion. If you're trying to decide between the slim and the magic, go with the slim.
As far as the macalley case goes, I've never owned one, but i recently check it out in store. They feel cheap and the tab felt like it would come off at the slightest tug. The material the tab made out of is some vinyl type that just didn't feel like it would hold up. This Yoobao case is excellent so far.