Hi, I need daily data to test and build trading systems. I am a small trader and can't really afford to buy data, especially since I want to test systems on a lot of different markets. The problem is that the free data I have found differs a lot. I can't know what is right and what is wrong data and the systems I am testing show very different results depending on the data I use. So, how can I know what data is true and what is shit?
Daily data. Interested in trying a lot of different instruments, in the long run; all of them. Most interesting at the moment is: commodities, indexes and forex.