I have personally found the speed and reliability of the SuperNova platform to be great. It is your standard Realtick knockoff.
If you do any type of decent volume I think you can negotiate a great cents per share rate.
http://www.ntsecurities.com/tradingproducts/activetraders/producttour.html
If you do any type of decent volume I think you can negotiate a great cents per share rate.
http://www.ntsecurities.com/tradingproducts/activetraders/producttour.html