I use 2 cases right now and couldn't be more happier with them, but it's all preference and what you prefer.
I use the Waterfield Velco Case for my Air, protects the Air very nicely, and fits into my Waterfield shoulder bag.
The other case that I use is the Civilian Lab sleeve (much like the ManilaMac, but a lot better I think in terms of quality and protection).
I also have a few other cases that I bought that I didn't like, and if you're interested, send me a PM or an email to
fredrick.yoon@gmail.com.
I have them out on the MarketPlace on this forum for quite some time.
1) UKWrappers Altarana Metal Grey Sleeve (will ship to US with Priority Mail for US$ 45 paypal'd to me. This lists for over US$ 60 from their website, hand made in England).
2) In Case Black Neoprene Sleeve (will ship to US with Priority Mail for US$ 25 paypal'd to me.)
3) Incipio Technologies Metal Grey Sleeve (will ship to US with Priority Mail for US$ 20 paypal'd to me.)
These 3 cases listed above were only used once and are still practically brand new.
Thanks