All I hear is to stay away from anything higher than 100:1. What does it matter? I know my bank roll and I know for every 10k traded it is worth approx 1$ a pip (depending on the currecy pair) and that I am responsible good or bad of that. What does it matter that you have to reserve approx $25 to trade 10k worth of the EUR/USD with 400:1 or that you have to reserve approx $100 to trade 10k worth of the EUR/USD with 100:1? The only concern I see is if you didnt understand the consequences and didn't have the money managment skills to control the equity left in your account thats avaliable to use when you are in a trade. I personally use 400:1 and love the extra flexability.