I dont see why commissions matter.
If you pay $50 RT, but make $1,000 RT due to the research you get, isnt it worth it?
If you pay $50 RT but can sleep at night knowing that your FCM wont go belly up in the middle of the night, isnt it worth it?
If you endlessly beat up your broker on costs, in the end, they'll beat you up. Pay a fair price always.