I bought a leather case (passport style) at an online store. It's like the one at apple store but the price is much cheaper. You can take a look. iPad Accessories Stores - iPad case, iPad screen protector, iPad accessories
I bought the Apple branded case. Anyway my motorcycle mechanic whipped out his iPad while he was working on my bike the other day....I just about pissed myself laughing as he pulled it out from his backpack wrapped in a bed sheet. LOL
I have a clear Hard Candy Sleek case. That will stay on permanently. Just last night, I bought a couple sleeves for those days I am going to bring the iPad somewhere: Built NY DVD/10" Netbook sleeve and a Case Logic 7-10" netbook case. I am trying to decide which sleeve to keep! The Built fits the iPad with not much room for anything else. The Case Logic has handles and a pocket for the charger. Good luck on your quest!
Bought the Mareware Eco Vue. LOVE this case. It does add weight of course because of the leather but I feel so safe with this and it feel real good in the hand. Eco-Vue for iPad