And now for something completely different : Best online trading app?

So… I’m planning on dipping my toes into some online trading.
Mostly chump-change stuff…nothing serious, not basing my entire economic future on it, or doing crazy day trading.
Just a little something to start to buy-hold a few select (and fractional ) stocks etc…

TD Ameritrade ? Schaub ? E*Trade ? Other ?

Anyone have a favorite ?
(ease of use and low / no fees preferred.)