Wow! This post did not age well...😵
For what it's worth: if you're in the Apple ecosystem, stay there. The hardware is generally very good, and things are made to work together: phone, tablet, computer, tv, peripherals, ...
My personal opinion is that Android will give you better performance for your money, and it's a much more open software environment for those who want to explore variations on apps from different sources.
Security? I believe the user plays a bigger role here than the device...