Whipsaw, Forex markets and generally pairs associated with the majors EURJPY, EURUSD, AUDUSD, AUDJPY, GBPUSD because these are generally smooth. For faster ride GBPJPY can be ok. As regards MT4 Broker...I demo with FXPro and not a complaint at all about them. Fast, always there, no lags, prices consistent with another non MT4 broker. Hope that helps.
John, There are many indicators posted here at downloads/metatrader/files. However, i can't specifically recommend any. I too will be interested in experienced replies. Peter