I think for usage like you describe, Robinhood is hard to beat considering you want to pick a single equity and buy/sell it. If the goal is to hold stock for a long period of time, what other brokerages offer on top of equities is their funds (some of which, I think, are also available to trade through Robinhood (?) but can also be traded for free on their own platforms).

The other thing you get with a typical brokerage that you don't get, as far as I know, with Robinhood is customer service.