$老虎证券(TIGR)$as someone who regularly uses tiger brokers，robinhood and futu for trading ，i must say tiger is the best in term of user experience（yes tiger needs to improve its customer service @巫天华）。robinhood has no community and doesnt support pre-market trading which sucks。Futu‘s UI is too flashly and not user friendly。Iget dizzy for using futu。all in all，tiger is my favorite，for now。