If you are serious about trading options, you would go with TOS. I pay $0.75/contract with no minimum and no ticket charge. I would stick with them even if I have to pay twice that. Creating orders in IB is a huge hassle and if markets are moving fast you WILL make errors and most of them are expensive. Analysis in IB is non-existent. Their $0.70/contract doesn't include exchange fees, regulatory fees, clearing fees, etc. These fees vary for different orders and hence gets tricky to calculate your exit price to meet target or stop loss. TOS passes on exchange fees, but they are in pennies and can be safely ignored without any significant impact. Analyzing a trade (or opposite trade), creating an order (or opposite order) from scratch or from your analysis screen, changing strike prices or expiration only takes two clicks. IB makes you go through hell for all these tasks. Do yourself a favor and go with TOS.