I had a dispute with Global Trading 26 (globaltrading26.com) and went to their complaints process. They have an internal team that just defends the company. Then they said I could go to an ombudsman - but the ombudsman they use is industry-funded and rarely rules for the client. The system is rigged.
Pros: Demo account available|Intuitive for beginners|Regular updates
Cons: Some tools only available on higher tiers