I ended up getting an Incipio Kaddy. My Kindle doesn't get a lot of abuse, so hopefully this case will provide adequate protection in my bag. I was looking into Oberon cases, but the price is a bit too much of a premium.
http://www.myincipio.com/Amazon-Kind...ylon-Folio.asp
Update: Received it today and like it a lot. The Kindle slides into the slots from the top and it is held securely. The cover folds back nicely and the strap also slips around the cover when you're reading. Not too heavy and the front and back feel very sturdy.
The case doesn't block any of the buttons or ports and actually makes pressing the page-turn buttons easier. It feels and looks like a nice journal or planner cover.
I decided based on another user's review here:
https://www.mobileread.com/forums/sho...d.php?t=122082