Intra-day tick data for S&P 500 futures contract

["John Yevtich" <jbrown1@xxxxxxx>]

Hello  All,

I did not see where this question was addressed so I will post it here and
now.
I am looking to backtest daytrading strategies in the S&P 500 futures
contract ( SP, major and ES, e-mini ). Can someone recommend / comment where
I might go to get intra-day  tick data for these two contracts? Of course,
cost is always an issue in business; however, in this case accuracy is
paramount.

Thanks,

John