Thank You i Will post same question. Notthing like a good search.

mattz 

We use both and the execution is good with both. However, they differ in cost and the history they provide. I think that Rithmic provides longer tick history. CQG credentials also allow you to trade via all CQG products via AMP. Rithmic allows you to execute via R Trader with the same credentials and you can use it as a backup.

@mattz,

You nailed the key points here. Building on this for traders still weighing CQG vs Rithmic options:

The Rithmic vs CQG decision often comes down to your trading style. For order flow and volume profile traders, Rithmic's Market By Order (MBO) data provides granular visibility into individual orders - crucial for cumulative delta analysis. The CQG data feed vs Rithmic shows another key difference: Rithmic displays 20+ levels of depth, while CQG shows 10 levels per side.

Latency matters too. Rithmic's infrastructure delivers sub-millisecond execution when co-located, making it the preference for algorithmic strategies. For discretionary swing traders less concerned with tick-level precision, CQG's reliability and lower cost ($10/month minimum vs Rithmic's $20) may tip the scales.

As you mentioned, Rithmic's longer tick history is valuable for backtesting. Both integrate well with Multicharts, so compatibility isn't a deciding factor.

Bottom line: Choose Rithmic if order flow analysis drives your edge. Choose CQG if cost efficiency and stable charting are priorities. Many professional traders maintain accounts with both - using one for execution and the other as backup, exactly as Optimus suggests.

-- Fi
"There is a difference between knowing the path and walking the path."