iPhone all the way. Yes android there is a lot more freedom but that also means freedom for developers as well which results in crap apps an even malicious software. Apple and iPhone are a lot more linear and uniformed but that's a goo thing. Plus it's a fucking iPhone man of course it's awesome
If you stick to the Play Store, you shouldn't really have any issues with malware. It's good to have a security app too (mine doesn't really affect my battery or use much RAM at all).
Your last sentence made me cringe, though.