I am currently with Scottrade and pay $7. per trade (plus 1.25 per option when trading them). I feel as though I can do better with IZone, IB, etc. I do maybe 10-20 trades per week with limited volume. So if I do 20 trades a week, that's $280 in commissions (equities, not options in this case). Can someone please give advice on what the best brokerage service might be for my trading needs? Thanks.