I think the best one is candlestik chart, this chart also known as Japanese Candlestick..! I guess Candlestick give us all importance info in every created candle on chart..! With the help of these candles we can predict the next move in the Forex market..! and i prefer to chose the bar chart because from that i can know better the market move previously i used the line chart but i have no any idea about the market but now i can easily understand the average move of the market