I´m looking someone who has data for futures on commodities. There should be this instruments Coffee, Cocoa, Wheat, Corn, Cotton, Sugar, Gold, Silver, Copper, DowJones, S&P500. Or at least some instrument from these that are stated above. I would like to buy the data or to exchange at my own trading indicator and EA. This indicator provides high quality trading signals. I have several conservative strategies that are based on this indicator and I can to provide real results as well. This strategies are for Forex instruments (EURUSD). I can to provide this strategies to exchange as well. Data should be with 90% modelling quality in Metatrader4
CSI Data is good for end of day data, DTN iQFeed is probably better. I don't think anyone here would provide you data except through a sublease of their agreement.
IQ Feed has futures going back to 2008. Very reliable. I checked metals, energy, currencies and softs.
I am not familiar with CSI however, if you have specific questions about Kinetick's depth and breadth of data, you can reach out here https://kinetick.com/Help#!Help_Request.
Check Quantpedia's master list of historical data sources. Premium data si for example good value for money.
Can vouch for Kinetick as well. Rock solid. Our production algos run of Kinetick and backup of Iqfeed