I really like that Native Union Gripster model...
There's nothing out there that beats the feel/quality of the Gripster handle. Really hope they make an iPad Air 2 model.
Email them and tell them u want one. I did.
I found any good cases but you might want to check out this one... somewhat similar to this one a Multi Angle case for iPad
Devicewear Detour: iPad Air Case Rotating
http://www.amazon.com/Devicewear-Detour-Rotating-Leather-DET-IP3-BLK/dp/B007IVW15Q
This is the case I use on my Air.