It’s actually not that complicated. What I’ve experienced with small lots is that demo accounts and backtesting both helps to figure out which trading system has a better chance of being more profitable. You can only discover this when you put in some money at stake. You’ll be able to find out that a particular system backtests quite well and you’re successfully able to demo trade it too. When a small amount of money is on the line, you’ll realize which trading system allows you to trade well in the real life conditions. As for me, I demo traded micro lots with Fxview and Oanda for they help with risk calculator on the order entry screen.