All These Provide Real Time Data for Amibroker and Metastock with 1 Min Time Frame Backfill. These Market Data Providers are giving 90 Days Intraday Historical Data and Tick-by-Tick Data updates every second. ValueRT and WaveRT are giving better support whereas VRTData is not giving support as of now. End of Day (EOD) Data for NSE, MCX and NCDEX is provided free with Intraday Data for any subscription.
These Data providers are giving data on number of symbols basis with minimum 5 min time frame backfill for 180 days. Data updation speed is fine. These data providers are not providing EOD Data at all. AmiFeeds and AmibrokerFeeder are giving better support but AmiDataFeeder is not giving support.