It's really responsive and not clickety-clackety-noisy, like the old Apple one we had previously. The keys markings are also clearly visible and the illumination works really well in low light conditions. The addition of an extra USB socket is great but I would have loved one more, as to use the single USB hub you need to plug in two USB leads into your computer. The number of USB ports on our Apple Mac Mini are limited so we're losing two on the computer and gaining just one on the keyboard. We use an iLok key as well as other stuff, so the more ports the better. If it had that I'd give it 5 stars, but other than that it's fab.