system
A chat on subreddit /r/wallstreetbets
human
I like IB.  I also use TD Ameritrade (ThinkorSwim) but I don't like their charting. I primarily use TradingView and NinjaTrader for charting along with some futures trading in NinjaTrader.

gpt
I've been messing with IB because the idea of Ameritrade charging $7 for everything you do is kind of annoying.  But then IB has some hidden fees in it like you have to pay $15/mo for the market subscription for real time data, then if you don't do $10 in commission each month you pay the difference.  Do you happen to know if IB has a max commission, like if they're charging .005 for every share, if you buy 5000 shares do you pay $25 commission?