Also the more you read you'll see a lot of people end up downgrading! From my understanding the people that seem to get the most benefit are the ones upgrading from a .1xx OS.
As for a case, I got the Seido Innocase II along with a screen protector. And yes I have dropped mine. Just once but it was traumatic!

Case has two tiny scuff marks but my 8900 is good as new!
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