Does anyone have experience with Trading Blox? I see the gentleman who developed it posts here and is held in very high regard. 1 What are the differences between the versions? 2 How much do you pay for datafeeds and where do you get them? 3 Is it easy to use? 4 Are you able to create your own systems and backtest or is it primarily for the preprogrammed systems (eg Turtles, Donchian, etc.) It seems like the customer support is good, I've read through their forum and Curtis posts there often. Thanks in advance!