Android all the way. I'm just not comfortable with the Apple ecosystem at all. iOS definitely has its advantages with the devices that run it being standardized. However, while I don't necessarily need bleeding edge everything, I enjoy personalizing things to taste, and ultimately do not like devices nor operating systems that are locked down tightly.

I only find it useful on laptop keyboards. I like the numpad for entering numbers, and I also like having dedicated keys for stuff like Home, End, and Insert when browsing or editing. It saves space when you can double the numpad for both.