No idea why people are saying the Performance is better. Master has the ability to connect up to three devices with a touch of a button. For me that’s my home desktop, my laptop, and my work desktop. Master feels much better in your hands. It has a horizontal scroll that I use for swiping through documents, photos, spreadsheets, and desktop environments. I still use the performance at home but it doesn’t compare to the master. If you can wait it out and find the master for $50, do it.