Well, you asked a VERY general question without providing any information about your concerns. Are you asking about the safety of your money, quality of execution, level of support etc...... If it is the safety of your money, and you will be using the US arm of either company, you will have SIPC protection for any account under the limits.
thanks for your reply so yes i know that any mistake i make as trade its on me but do they make my trades go wrong some how are they hounest
TD routes their equity orders to market makers and IB routes their equity orders to ECNS and exchanges that subject you to fees or rebates. Our offering, Lightspeed Trading is similar to IB in that respect. What country are you from? What is the size of the account? How often do you trade? If you provide more information in a private message, I can tell you if we or any of those brokers would work better for you. I don't expect your concern will be your biggest issue.
I often split trades up so VWAP is a reasonable comparison. I also monitor executions to see if I get midpoint, lose the spread or get moved. Completely subjectively. So how do YOU measure executions?
You're never going to get worse than the bid/ask just about anywhere, and anything liquid has a 1 cent spread, so what the hell are you measuring?
Well, it's apparent that you're the one who doesn't trade. Extremely liquid stocks like AAPL, NFLX, GOOGL don't have 1 cent spreads. I also suppose you have never heard of spreads widening during volatility before. It also matters where you stand in the queue. Not even talking about moving 10,000 when the bid has 1,000 available. If retail order flow was valueless, why would any firm pay for order flow? Common sense.