sammybea
the point of a direct conncection is not the amount of data you can pump through the connection - the important point is that is the most direct connection to the exchange - and so is not affected by the internet parameters
and if you have a direct connection - you should only use your trading platform with it - no other data on it
the time issue of the direct connection for sure is important with bonds - where a fraction of a second could affect a scalping trade
personally, with the retail imput of the eminis causing so much noise - i am not sure time is such an important factor with emini trading, but it may have more effect on indexes on liffe or eurex
but the key, even in eminis, is stability of the line