Still not sure whether the Magic Keyboard 2 as suppled with the iMac is better for me than the solar-powered Logitech K760 I've been using for several years. Both have their good points, the Apple one pairs instantly & stays paired longer, the Logitech has more key travel & never needs charging.
But with the K760, F1, F2 & F3 are designated as the keys to select between three separate Bluetooth channels; one for the iMac, one for the iPad & the other for the iPhone.
This means I have to find other function keys. Fortunately F13, F14, F15 & F16 are available on the Belkin YourTouch numerical keypad, programmable in Keyboard Preferences.
