Pls suggest historical end of day data feed for Amibroker

Hi to all,

I am getting Amibroker and need some suggestions on the best historical end of day data feed. There are so many options, I don't really know what is good. I need something that goes back to 1980. Of course accuracy is a must. My first line of business is to plot the percent of sp500 stocks above their 200 day moving average starting 1980.



I like free..... I am willing to pay if necessary :cool:



Thank You - Joel