I've just got my iPod touch fifth generation or iPod Touch 5.
The first thing I wanted to test was how good the keyboard in landscape mode could be.
I can tell you that there is plenty of space, and miss-types are rare, if they ever exists. I thing it has nothing to envy the Samsung Galaxy S3 keyboard.
If fact, I would prefer the iPhone 5 over the Galaxy S3. I'm talking only for the size and typing feeling point of view here.