I hear alot of good things about TT and I have used it to trade for 3+ years. TT keeps comming out with features that improve the product like Stop Loss orders and the ability to drag and drop orders. TT is a professional product and targets traders who want these features and charges a monthly fee. J-Trader usually is built into the price of your commissions instead of a monthly fee. So, if you do more than about 450 RT/month the cost is the same or less. At Velocity Futures we offer Dual Login's to two different servers for TT and we charge $125 less for TT than most other firms because we like it so much. It is just $500/month, including both logins. I think if you are starting out trading and don't know if you are going to make a career out of it or not yet, then either product will do if not J-Trader. But, if you are a full time trader, there really is no substitute. Another thing to consider is the platform stability, after all how much oportunity do you loose if your platform has problems when you are trading news. This can pay for several months of a stable platform. Your Internet Connection and your software can make the difference between making it as a trader and blowing up.