I don't know what's good, but I can tell you to stay away from "Pearl mCover" That suxxors.
I've had a Pearl mCover for several months and I'm very happy with it. http://www.amazon.com/gp/product/B004I4BS1E/ref=oh_details_o00_s00_i00 Check the user reviews. Out of 251 reviews 85% give it 5 or 4 stars. Those are fantastic numbers by Amazon standards, especially when there are so many reviews.