I've been on this forum for 2 days now and most opinions about wallets I see:
- blockchain.info and bitcoin-qt are good, because you have your private keys and manage addresses yourself
- coinbase and others are bad, because you don't really own your bitcoins

I haven't tried blockchain wallet yet, and last time I used bitcoin-qt was 2 years ago, but I don't think it's much different now.
Question is: How do you manage hundreds of addresses and where do you store securely your keys without relying on 3rd party wallets, like coinbase?