Hi, I am highly considering purchasing OpenQuant for the development of automated trading systems. The system Im initially looking at automating is a high frequency (50-80 trades a day) scalping system that trades EUR/USD, AUD/JPY and possibly GBP/JPY. Now which ECN broker (not a deal desk) would be the suitable for this? The most important criteria for me would be fast execution and reliability. As to the spread I expect all brokers would be similar maybe 1 pip on the majors and 3-5 on the GBP/JPY. I realise i probably dont have many options as most brokers are market makers... Thankyou. Nizar.