Data feeder + Broker API ? blackbox

Hi, we are working on program our own Black Box, but we are not sure yet, wich
Data feeder real time for all US stock exchange with API and wich Broker with APIs to use .
we are looking on opentick, but we can ot get more than 100 symbols at the same time on real time data .
wich tandem of DATA feeder + broker with apis you people recommend .. ?

regards
Eze
 
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