Quote from bluelou:
I'm a current TradeStation user but in the middle of switching to OpenQuant.
I use TS to run a fully-automated algorithim-driven trading program. I've done most of the serious programming in C++. TS cannot handle multiple tick frequencies in the same strategy without substantial EL programming. It takes over 1 hour to run a single backtest through 1 year of data in EL with my current program. Also, the TradeManager often does not record trades properly and the ReportManager has a magical ability to represent the past better than the actual trading record.
I would recommend TS only for the hobbyist or for those who think they see patterns in charts. I would not recommend TS for someone looking to apply anything resembling scientific method to trading.
I recently received seed capital to form a fund based on my algs and I'm working feverishly to recode this in C# so I don't look like that jerk in the ESignal commercial.
-BlueLou