This may/may not be helpful to potential customers, but I just thought I'd let them know of my experiences:
After a bit of research, I decided that the Devicewear Ridge for my mini was probably the best bang for your buck out there in terms of folio cases. Although I am mostly satisfied with it, there are a few things that bother me, to the point where I'm considering returning it.
-The cover doesn't stay flat on the screen. This normally isn't that big of a deal, but if the "bend" get large enough, it can actually prevent the auto-sleep from functioning when you close the cover (in 1 case today, it didn't wake up when I opened it).
-In portrait mode, the folio adds just enough heft that it can't be held one handed for a long period of time. Now, this is just my personal experiences, perhaps my wrists are weak (they are), or perhaps my memory is playing tricks on me in terms of the comfort of being able to hold the mini for prolonged periods of time bareback, but this is pretty annoying and somewhat negates one of the major pros (in my eyes) of the mini over its larger sibling.
It's unfortunate that this is the case, since I like my Ridge otherwise, and the multi-angle stand options it provides in landscape mode is pretty convenient. I'm going to try it bareback for awhile, but otherwise, I may have to buy a sleeve and portable stand combo instead.