Quote from apdxyk:
Rithmic has not let me down in 2 years. I use PhotonTrader + Rithmic. I like the implementation, very redundant. They split the execution network and the signal network, so a lot of times during announcements, if you bracket you shall hear the executions before you see it on the trade matrix. Reverse speed of sound effect.
I used to use CQG. I like the charting - very clean. Good debt paper feeds.
Looks like in terms of aggregate feed they have been coasting on their past reputation. Too many disconnects about a year ago made me cancel. They are still good, depends what you do and how you do, but their feed network needs and upgrade for sure.