Currently, I'm using TradeStation, and I have found that using TradeStation is extremely slow in doing optimization and walk-forward test, etc. Therefore, I'm looking for other tools. I know many people in the forum is using Java in the live trading environment, but prototyping in other language. I think I need more time to go that path. As an individual retail trader, productivity is the top priority for me, I may have to go through a LOT of trading ideas before coming upon one that works! Therefore, I don't want to waste my time to learn and swithc between tools. Please advice!