I need an external keyboard, and have narrowed it down to the Zaggkeys Flex and the Logitech Tablet Keyboard for the iPad. I do not want a keyboard/case combination, just a separate, portable keyboard that comes in a case. Has anyone tried the Zagg keyboard and, ideally, compared it to the Logitech keyboard? The Zagg keyboard looks very nice and seems more compact and lighter (had a built-in lithium polymer battery), but I'm not interested in a really shrunken keyboard. I'm willing to carry something a little larger for easier/quicker typing. I have an Apple BT keyboard, but was interested in a keyboard with iOS function keys. (If I had to go with the Apple keyboard, I'd get the Incase Origami case for it.) But if folks think that the Apple keyboard is far superior to the other keyboards, I'd be interested in your thoughts. Many thanks.