Quote from Div_Arb:
You folks are also overlooking the fact that TOS pays a paltry interest rate on cash balances. This can add up to major opportunity costs over and above the higher comission costs, in comparison to IB.
I'd say do a cost/benefit analysis. If TOS is under $2000 in additional interest/commission costs, make the change. I would also be cognizant of what sorts of margins TOS requires for options on futures. IB is in the habit of hiking margin reqs, not telling cusomers, and then blowing out positions in client's accounts. This has happened to me I don;t know how many times, with no resolution with IB.
Chaning margin reqs with no notice is my main reason for giving STRONG consideration to TOS once they roll out options on futures. IB has clearly shown to me that they are no partner of mine. TOS's platform also works with my firewall at work, so I am not always in the dark with IB's stupid Webtrader.