OEC data feed is through Gain Capital. They are well aware they have a severe problem, I'm not sure why they don't fix it. Everybody I keep up with is pretty happy with AMP. Some of them use Rythmic, most use CQG. The picture I posted, the AMP product is the chart on the left, dragged over to the gain trader, OEC, on the right, to show the time delay.
You won't be exposed to the OEC feed at AMP. I've not seen anything that bad since I've been watching 2 feeds at a time. It's not a reflection on AMP, rather a reason to go with AMP, since their data is on time! As you can imagine, that was a pretty busy time, August 26, around 1:30 EDT...and AMP's data and the multichart was as smooth as could be.