Serious question, does the best most secure wallet and single or multi-sig really matter? If I'm coming after your Bitcoin I'm coming for your seed phrase not your wallet. If I have your words nothing else matters right?  

 This would be part of the benefit of multisig. A single set of seed words don't threaten your bitcoin and so you can still move them if a key has gotten compromised. 

 Seeds plus passphrase is a good poor mans multisig. Keep the seed and passphrase separate.