I do more than 500 contracts of oil futures a day at IB. That is a lot of commission money. Lately I have been thinking, may be i can save some of it as profit. I am happy with IB, like their TWS, data feed and overall service (although occasionally they have been less than helpful). So if there is a broker out there with lower commissions but similar trading platform etc. , would pppreciate info on it. Thanks.