Keep is simple is one of our main goals.
The 3 QR codes method you described makes a cheap, quick and easy to use equivalent to a 3:3 multisig.
Sorry about saying the obvious, but is always good to remind, as any x:x multisig if you loose one of the secrets you'll be doomed, please back up them carefully.
Each individual will have his ideal setup, but what freight me the most is to lose the key, so it's a good idea to have redundancies of these secrets.