I picked up this bag from Amazon this week. Good quality and lots of pockets. It's taking my old lap top case which is way to big (15.4") for the Ipad.
It is so much lighter and smaller than my old lap top set up. I love it.
I have the Ipad Apple case too, which fits in the case too.
Having the strap to go over your shoulder is great, rather than have to hold it in you hand all the time.