Me personally, I like to risk 2% of total equity on every trade. No matter what the broker allows, I allow one es for every $5,000. So with $25,000 you can either trade 5 lots with 2 pt stops or 1 lot with a 10 pt stop. Either way it still comes out to 2% of total equity. I've never tested. Wouldn't know how to. But I suspect over time both ways would come out the same. (less com with a 10 pt stop, but I could argue the farther you look ahead the harder it is to see. But I could be proved wrong on that one too.)