[technofiend]

I mistakenly thought the cloud key ran a lesser version of unifi than the distribution found on their website, however googling around implies it's the same version. So I suppose budget for a cloud key or a pi. A raspberry Pi 3 is 64 bit, runs Fedora natively and can serve up other functions beyond the key. So I lean towards the Pi but if they're functionally equivalent I suppose it's down to personal preference.