epsilon networks, Thesys Tech, Futures Fast Financials Feed, here. This is Tradeworx infrastructure sub Thesys Technologies. Nice avg price change in SPY after ES 1 tick move graph on the link. Avg 5 mils profit per share of SPY for 1 ms latency reduction looking at ES tick Aug2011@ $300K/yr.
Aurora to Carteret less than 4.25 mS (one way)
Aurora to Rochelle Park less than 4.45 mS (one way)