There are many advantages to trading the futures over NYSE, most of which you have listed. I think for many stock traders the futures look deceptively friendly. In reality they can be very dangerous, particulalry if you use the available leverage. Methods like reading the specialist and opening only orders that NYSE traders routinely use are no help. I'd advise investing in some backtesting software and thoroughly evaluating your intended methodology to see how it does, paying close attention to optimal stop sizes and profit-taking approaches. If you are going to be doing 100 lots in the e-mini's, you might want to consider trading the big contract instead, as you will save big on commish. Slippage is a lot worse but it depends on how you trade as well.
