I've been day-trading stocks(only) using eSignal with Ameritrade as the broker, for about three months. I like the eSignal platform but am not satisfied with Ameritrade for day-trading because: 1. The $10 per trade commission is eating into my profits. 2. I often don't get filled on LIMIT orders even when the stock just touches my price. 3. The eSignal Money Management Strategy setup doesn't work via Ameritrade when trading Stocks. I've researched IB, MB Trading and LightSpeed and have read mixed reviews on them. If any of you use eSignal to day-trade Stocks I'd love to hear from you. Thanks!