I prefer Moleskin's solution (which Dodo cases offer for rather too much money) of using an elastic band to close the case. The addition of an orange band for a black case like mine would also make it appear less bland.
People who like the Poetic Slimline will find confirmation here:
http://www.youtube.com/watch?v=izrEMwOxIyo
I find it interesting that companies are starting to use fewer and less powerful magnets for cases. Are manufacturers are being cheap, or is there some other issue with powerful magnets in close proximity to smartphones, e-readers and tablets?