What do you guys think about trading with Tradestation? They charge $5 for RT, and require $5k min to open an account. I wonder how reliable is their platform. If I have an account with them I pay only $100 a month and I'll have charts plus the ability to backtest. I still don't understand these extra data fees. What is market depth? Is their any benefits of using it?
FYI: a list of brokers with a search tool (who trades stocks, bonds, mutual funds, futures, etc ) Not really up to date but still very useful: http://www.quotelinks.com/brokers.html