Hello Friends!) I am developing a trading system and it needs various time-frame data (e.g. hourly, 4 hourly, daily - all in strict consistency with each other ) very far back in time for a lot of different kinds of instruments (stocks, forex, commodities). Is there a unified, high quality data source that could allow easy download or export to the textual format? I know TradeStation allows stock and forex data export for various instruments.. But what about a unified broker that can give access to everything ? Thanks!!!