Quote from romik:
I was using X_T @ $600 p/m and it failed all my expectations. The actual fills, some, were dead wrong different than what was seen on screen. My experience with X_T turned out to be a very negative one and the broker has given me all sorts of data sheets, as if that explains anything. One needs to be a programmer to understand what that data means. I've been using NT with PATS for quite some time now and not a single problem so far. Basically, as far as I have come to realise through personal experiences, high license fees do not guarantee a lower failure rate. BTW NT is $50 p/m, go figure.