My experience:
XAPO: It's interesting (debit card, twitter tipping...), but it has a overhelming security if you are new.
Coinbase: It's interesting, I have some BTCs here.
Holytransaction: I recommend this if you like to use
altcoins. It allows to use various currencies.
Instawallet ---> It was interesting, but the security was too low.
Now, It's closed.
I like Xapo for the zero fee transaction.
Their vault is interesting also, but I never use that
Thanks for recommendation
im just joining BTC world
and my first wallet is XAPO