I will always prefer Blockchain wallet, it has a very simple design and a user intuitive interface, which let's even new users find their ways around it.
You have explained in details the uniqueness of the blockchain wallet; but still it remains a centralized wallet.
I am not discrediting your choice or opinion of wallet; i just want you to realize that the best way to store your bitcoin either low or high quantities is by storing them in a decentralized wallet such as the one listed by the OP, a cold storage or bitcoin paper wallet.
Do your own research to make your own decisions.