I have used real-time Quote.com, Esignal and Barchart.com over a period of 6 years for futures day trading. They all can display 1 minute OHLC bars. Quote.com is the worst. Esignal and Barchart both have inconsistant 1 and 5 minute data bars. A window refresh after about 2 minutes reveals a completely different OHLC bar for the exact same minute. Its almost a joke. However Barchart has fairly good customer service and may be able to rectify the problem hopefully soon. A year ago Esignal eliminated their 800 service number and now it takes forever to get phone support. They must get a kick on the long distance charges.
I'm looking for a better data vendor who focuses on delivering precise 1 and 5 minute price bars and alot less on slick color graphics, flashing websites etc.
Any recommends ?