We use Wealth Lab for system testing because it summarizes performance over multiple securities, has several powerful coding "shortcuts", and has a one-time licensing cost. WL has a lot steeper learning curve than something like the Market Information Machine (http://www.lim.com/docs/Xmim/Default.htm) but it's not $3000/month either. We've published a free custom quick start guide for EGM members that's been really successful in reducing that curve and also provide custom coding for those who want a quick fix. It's amazing how many seemingly profitable strategies don't work with consistency, and you never know until you test. - Rob