Quote from IBsoft:
Revealing the identity of the liquidity providers should not be all that helpful to you. Even if you know their name, if they wish, they can still decide not to honor their quote (albeit it is a lot less likely in case of the big banks). Think of the biggest banks in the FX dealing, and I really mean biggest, those are the ones on our system.
I don't know who the competitors are you are referring to, but my suspicion is that they are not in the same league as IB. One reason behind their revealing their provider(s) may be that they have 1 or maybe 2 of them, hence to attract the customers they have to reveal who they are so heavily relying on.
Given that we are adding the fifth major bank, we depend a lot less on every single one of them. The strength of ours we like to emphasize is the breadth - which should already be very apparent in how tight our quotes are, even during times of volatile markets and economic news announcements.
Again, we are not asking anybody to take our word for it, although if you think about it, I should not be able to get away with lying in this forum.
In closing, I suggest you open an account and trade a portion of your capital on IB-TWS side-by-side next to your current favorite broker's platform. In time it should become very clear that IB's offering is superior.