I had the Zagg for my 3. I returned it in favor of the ClamCase. I think the Zagg key board is much better than the Clam. My main issue was not being able to use the ipad in tablet mode in the Zagg as you can in the Clam. Oh, you can use the Zagg, in tablet, it is really "floppy" though.
Both keyboards are quick, and both cases offer decent protection.
Both keyboards are quick, and both cases offer decent protection.