"An example is the S&P 500 where our cash market spread is 0.3 with no commission and the futures spread is 0.25 + commission. Sure you can place a trade into the bid or ask directly but rarely will you be anywhere near the front of the queue to get the trade executed to advantage"
This is a bit disingenuous. Even if its not to your advantage and the bid/offer trade through you are still .25 point better through the futures than the CFD's. The same when you have to exit the position. That "free brokerage" in the case of S&P futures actually cost the retail punter USD 25 per round turn.
