Hi guys, I'm using the IB API to get RT data, and I am wondering which API will get me historical stock data (incl volume and NBBO, with timestamped trades) the most cheaply. Ideally, I would like to have both the IB API and the other API running at the same time. In other words, the IB API is running continuously to collect RT data, and the historical API would get called any time there is a request for older data (like if I were to call up a daily chart in my program). TIA, -b