Reply to Recommend me an iPad case?

Hey guys, couldn't find a thread on this when I did a search. Just wondering what are some of the best iPad cases? iPad has become an important part of my rig so I need to invest in a case now. I've seen cases ranging from $20-$100+. Hoping to score something for less than $50? I'm using iPad2 if that matters..

So which case are you using? Thanks!