There are two main things that turned me off and is making me return it and ordering the MX Anywhere 2s older model. I use the wheel tilt feature to send specific keystrokes when tilting left and tilting right. I was excited when initially unboxing the new MX3 and really liked the new spin-wheel but when setting it up and realizing the tilt functions were gone blew my mind. The one other large issue was the Unifying USB dongle being larger, sticking out further from your laptop. So, two thing that I consider regression but with a ~$30 premium. I'm going to return the 3 and order a 2s.