Hi guys, I'm starting a professional trading firm in options on Eurex and Euronext. I'm looking at the trading software (quoting) and wonder what may be the best buy. RTS? Actant? ORC? Any other fast and user friendly alternatives? Speeds is absolutely essential, as well as a user friendly interface. Basic needs are quoting and trading in single stocks. No intra stock paired trades and complicated matters. Any suggestions here?