Wow, these Caseen cases look NIIIIIIICE! I love the fact that all of the cases come with a handstrap and a stylus holder. I'm normally a classic color type of guy - black, brown... But I have to admit that the green and purple look so cool that I wouldn't mind showing off my white iPad in them! Pink might be pushing the envelope a bit lol!
If I were to pick just one, it would be the dark brown plaid:
It's looks classy and professional, fit for business purposes, yet stands out in a crowd. I haven't seen any case like it for the iPad. Again, I love the built in handstrap and stylus holder - perfect or my new VIBE stylus (see my review in the "Best stylus for painting?" thread).
Overall, I'm glad to see fresh new cases like yours in a growing iPad case/cover market. I hope Caseen is here to stay!