The biggest drawback is that they don't do SEPA payments now.Are you satisfied with them?
This is despite:
-Their online documentation still including SEPA payments in the fee list.
-Isle of Man being added to the SEPA list along with Jersey and Guernsey in 2016 (and I don't see any evidence that IoM has been removed from the list since Brexit)
When I asked Santander support about this, they just say "We don't do SEPA." They didn't explain further.
So every EUR transfer to Europe costs 23 Euros and takes up to 5 business days.