For save and secure my bitcoin I use both. I separate my bitcoin about 75% to blockchain, and 25% again I save to xapo and coinbase. For me, blockchain is more secure and fast than xapo or coinbase.
You got it, blockchain is the most secured bitcoin wallet provider. But of course we are not the same, we have our own perspective on why we are going to like ones bitcoin wallet provider.
But for me, Blockchain would be the best even though I tried to use xapo but I stopped already I hated their 60 second cool down for security.
Unlike blockchain's email verification.