Thanks for all the replies! You guys are the best!
I was originally set on the ebay plastic cover, but then I thought it was too big and bulky. Then I figured that Octovo really should have their new K3 faux leather slip cases ready before Christmas, which means within the next month. I think I might just wait out the month to get the cover I am desiring. For those of you who don't know what the Octovo faux leather slip cover is, here's a link:
http://www.octovo.com/product.aspx?cid=64&pid=6 It's just perfect for my needs, but they don't have a K3 version yet. I need something solid like that, with a small form factor. Also, the Kindle can be put in and taken out frequently without a hassle. That's why the Amazon Kindle Case isn't doing it for me, because it's a hassle to play with the tabs and the elastic every time I transport the kindle (which I obviously do frequently), and I usually don't like to read with any covers on, since they add weight and bulk. That's also why I prefer a slip cover over an Oberon or Dodo case that you guys have shown me above. I'm just surprised that not many other companies have made firm slip cases like Octovos.