Depends on how frequently you need to access those keys.<p>If it's for long-term storage only then I would consider keeping the keys in a password manager on an <i>online</i> machine to be an unnecessary risk. Keep the key offline, possibly even on a piece of paper (a piece of paper at home or at a friend's would be totally safe as long as nobody knows you have coins - and any eventual burglars wouldn't even know what the paper is for).