I would not like to comment on the two softwares mentioned but more on the data issue. My personal feeling about the real time data vendors is, that the business of providing the data will get more competitive. Many brokers provide RT data with there execution platform. Any good software is now able to pull the data from that feed. I have recently posted a link to an add on tool that pulls the IB real time data and stores it in one minute bars on your peronal harddisk. Problem at the moment is that you have to have the computer running for collecting the data. Soon there will be a feature that provides users with the possiblility to receive the "missed" data and fill the gaps ( which is technically easy to do). At the moment this tool only works with WLD2. You can find information and a demo here: http://www.finantic.de/en/ibdata/. I have used the tool and it is really fun.