I use Schwab's StreetSmart Edge, TOS to use their custom scans and free access to BookMap, and Tasty to monitor the most active options. This takes 7 screens on 3 CPUs. I execute all my trades through Schwab and get pretty impressive fills - I swear I often get fills that are better than the NBBO I'm staring at in Level 2. Used to use IBKR, but getting through to their customer service was exhausting.

The guy above has no idea of GOOGL's stock price. It was at a high of $99.50 on Tuesday, and hit a low of $94.00 today (Wednesday). I have no idea why I look at Reddit - the posts are moronic.