Been with Interactive Brokers for auto and semi-auto trading using Multicharts and DTN IQFeed. Why the feed ? Because of the exhorbitant data feed rates for corporate accounts at IB. The big problem is: without the IB data feeds, many resources on interactive are not operative....for example, the Market Scanner. So I am now thinking of moving to Tradestation....as the multicharts code is compatible with EasyLanguage for the most part. I haven't compared the commission rates....doing mainly options and futures. Is this a good move or not ? I am a former TS2000i user and programmer.