I'm not confusing them at all. I've traded options with IG for over 20 years and will not trade with IB because although their charges are less their telephone support personnel are few in number meaning when there is a problem you can't sort it out on the 'phone.
I use IB, and agree with the comments about IG above; the lure of tax-free income just about covers the downside of poor bid-offer spreads for higher-value options held for a while, but definitely does not work for lower-value options traded frequently. There is also no multi-leg function on IG, and margin is applied to both sides IIRC.
Not a personal recommendation as I haven't used it, but OptionsExpress seems to get good reviews and feedback, and this recent article recommends E*Trade:
I have used IB for over a decade, left them after about 5 years to start an account with now defunct MB trading, IB are easily better, so went back. They give nice executions, pay interest on idle cash (above a minimum), commissions are average when compared to some others, give a plethora of analytics, 90% useless to me. I am still surprised they don't have simple things like the expected move for an underlying, even more simple combo option inputs for quantity without having to manually adjust laboriously in their 'quick' 'Strategy builder'( IB users please vote https://www.interactivebrokers.com/en/index.php?f=2493&sid=14346) in comparison to TastyWorks. Tastyworks do have the most simple user friendly input, saving time, essential for many trades. TastyWorks also have caps on their commissions, making them easily more attractive if trading in larger quantities. even low quantities, they are often unbeatable, at $1 in $0 out. if IB would catch up with the simplicity of combo inputs, have improved commissions and have expected move of the underlyings for each expiration, like TW, I would trade soley with IB. oh also introduced my brother to use IB. I have an account in each. Hope you find a good broker.