Quote from my2cents:
I have to disagree, I used eSignal from when they were simply known as Interactive Data and one had to have a dedicated phone line to receive the transmission. Over time the company lost their focus and tried to become the be-all end-all of data and analytical software providers. As they branched out into sundry product lines the quality of the data suffered. As far as I'm concerned the last good version of eSignal was version 1.7.
I migrated to DTN.IQ 8 years ago and couldn't be happier. I have not had a single complaint for the data service they provide.
The data is fast and reliable and when delivered over the FIOS network it is a powerful trading tool.
The only issue I've ever had with DTN.IQ was a billing issue that was quickly resolved by a very courteous representative of the company.
As for pricing, compare for yourself:
http://www.esignal.com/esignal/pricing/default.asp
http://www.dtniq.com/template.cfm?navgroup=trynowlist&urlcode=21&view=1
For me DTN.IQ is the superior provider.
Just,
My2cents