[Apocryphon]

Have you tried TD Ameritrade's Think or Swim?

[adabyron]

Think or Swim is awesome if you're technical or putting a lot of time & geeking out into this world.

Robinhood is awesome if you're new or want something much simpler.

If I was daring, I might compare it to Linux/MS vs Apple on here but I don't dare because people would take that the wrong way.

[fnordfnordfnord]

ToS is pretty good. Takes some getting used to though and is sometimes confusing.

[carlivar]

The ToS people's follow up venture, Tastyworks, is now better IMHO.