I gave VANTEX Finance SA / vantex.ch a fair chance. After since the beginning of the year of usage, I can say with confidence that there are far better options available. The interface is clunky, the fees are higher than competitors, and the customer support team seems overwhelmed or understaffed.
Pros: API access|High security standards|Customizable dashboard|Clean UI
Cons: Inactivity fee applies after 12 months|Help articles are sometimes vague