Yes, the Air 2 vibrates pretty severely, I remember when I used one in an Apple Store, having Siri only at half volume or two thirds of the way turned up would make the whole bottom half of the iPad almost feel as if there was haptic feedback corresponding with the "Siri sound" when it's innitiated. However, I would take the vibrations and alleged screen distortions (I've never observed this, but I also have never used an air 2 for more than 5 minutes at a time) over the severe tab reloading and severe UI lag associated with iOS 8 on the Air. Plus, you get Touch ID which is awesome, and Split View with iOS 9! On top of that, you have a much better camera sensor if you, for whatever reason, need to snap a picture with your tablet :roll eyes:, you have an improved, laminated, display with the anti-glare coating, and again, everything is smooth and consistent, no UI stuttering like what is seen with the Air.
Air 2 wins. Hands down. I don't care what you people say about the Air 1, it stutters like hell with default settings. Simply turning the screen with a keyboard, using control center on the lock screen among other things cause tons of dropped frames. Usually what looks like ~25FPS or less. Really sad.