With regards to Armoury:
I haven't; it's supposed to be super secure but it seems complicated.
Not sure what could seem complicated about it, the recent versions are pretty simple. I switched over to Armoury from QT a while ago, haven't looked back. Armoury is marginally easier to use than QT, and has some really helpful features like paper wallet backups. With these you may print out or write down information that will let you restore all of the address (and the private keys, which let you
use coins in these addresses) in your wallet(s).