Now I use this a lot, and I cannot put it down. I've had the iPad 1 wifi only, iPad Mini, and now this iPad Air wifi+cellular. Ok, so this tablet is bright, crisp retina display, fast LTE and processor. I can load web pages faster than a blink of an eye. Then load up several apps, and jump to each if them without hesitation. It is light, durable, and thin. I can neatly stack it away, in my case iPad case, and other books and note pads, and it looks great. My goodness, the things you can do with this, while you play with it in one hand! It looks and feels expensive, beautiful, and professional. It's quite incredible.
Now I can handle the 16GB model for my needs, but it's important to start with a higher storage capacity to get the fullest from this tablet. The more I play with this, the more I wish I had started with the 32GB model, for only $5 more a month. White instead of space grey? I don't care, I love the screen and performance to even take time to stare at the colors.
Any doubts? Get it! You will love every second of it. Now, try it out too, just in case, every device has a downside.