Quote from late apex:
Virtually no currency trading strategies, outside of sub-1-minute scalping, are optimal at, or even compatible with, leverage figures above 50:1. That's not just my opinion; it's an inescapable property of how expectancy works.
late apex, that's absolutely correct, but it's not quite the full story.
With larger leverage offered to me, I can choose to use the same bet size but use less margin.
This leaves me with more margin available to implement other, uncorrelated strategies.
In theory this is true; in practice I doubt that more than 50:1 is ever very useful, based on that idea of diversification. Diversification is a bit limited in forex, I think.
I have heard of people making big money using maximum leverage, but I'm sure that for every one of those there's a thousand who've lost it all the same way.