Trading with XS.com seems pretty reliable based on my experience. They offer a sustainable predictable platform and a pleasant variety of assets to trade. Here, I even tried different trading styles, due to this flexibility. As for the cost, their deposit requirements are very human, spreads are quite competitive, besides, there aren't any hidden fees that I've noticed. It's affordable enough, especially if you're mindful of your trading strategy and volume. Overall, it's a recommended choice if you're looking for a trustworthy broker with good choices of instruments without breaking the bank.