I saw many discussions on here talking also for offline wallets..papper wallets or cloud ones.
Wich one is the best ?
Cloud wallets will never be safe. Offline wallet and paper wallets would be the safest if you spend them correctly.
It is highly likely that OP read some threads where spammers are spewing nonsense that wallets such as 'blockchain.info' are good, while in fact they are horrible and should be avoided.
OP, reading this thread may give you more insight and introduce you to more options:
[General] Bitcoin Wallets - Which, what, why?. Generally, if you don't want to spend money on a dedicated wallet, you don't need to. The first step is to use a desktop client rather than a web wallet.