Since u mentioned Platform, and the previous aswers where just about EXCHANGES(till i wrote this), i must say that i like COINIGY the most, but it`s kinda ''expensive" mostly if ur trading amounts under 300US. but it really makes a difference in therms of speed and layout... thats exactly what we need as traders. really dont think its possible to be really efective,using exchanges like bitrex and poloniex expecially doing scalping;of course u gonna use them, but in one plataform that u like.