Any suggestions for a low latency tick by tick feed that publishes USA Option and Equities that is $1,500 or less per month. This is for an option automated trading system. The Feed will be used to generate continually updated/changed limit orders inside the current Bid/Ask spread at specific options Exchanges. This means it needs to be fast enough so that the limit orders generated from the price feed and sent to the exchange are inside the current bid/ask. I am looking for close to an institutional level feed without paying $10,000 per month. If you have any experience working with the feeds you are suggesting, please include your thoughts. Thank you for your ideas and responses.