Since you know precisiely what you're looking for better than we would, may I recommend you start by browsing the iMore Store via the following link? The new iPad Cases - iMore Store
I use the Versavu from Targus, works really nice. Looks great and has four viewing angles and one typing position. Stand rotates 360 and has a magnetic on and off.
I got the iPad 4th Gen for christmas this year from my parents and they got me a generic case that worked for a bit but there were certain things about it that bothered me. One of my friends had gotten a case from domeoproducts.com so I decided to check them out. They seemed to be very good quality so I bought one. I got the loft folio and it has been incredible! Go check it out!! Loft Folio iPad Case | Hard iPad Case | iPad Stand | domeo