I'm using a combo of the dark grey Apple Smart Cover and an black InCase Origami sleeve when on the go. I switch out the Origami for a Booq Boa Skin XS when I'm using it around the house.
I also had bought the Targus Versavu. I admit I didn't know about the problem with the magnets when I bought it. I do think it's pretty cool that Targus will send out a replacement for free and I don't have to send this one back.
Got the Maroo Koe, just arrived today. The cover looks a tad orange-y, and the media viewing position doesn't lean back as much as I'd like, but other than that, I think it's a pretty nice case. The sleep/wake function works fine too.
I picked up the Griffin Inellicase, in navy. The front "smart cover wannabe" is cheap. The back hard plastic is nice. I wish the interior had a microfiber though. The clip to slid the front flap into is kinda tight.