What is the most accurate way to Backtest using MT4 (BUILD 202)??
It depends on used strategy. If there is no necessity to trace everyone change
of a price, and thus to spend testing as much as possible quickly - use model Open
Price only. Comparison of types of modelling is resulted in the article Strategy Tester: Modes of Modeling during Testing
Every Tick, Control Points, or Open Prices Only?? Also how accurate is it? Does it depend on the broker?? I use Interbank FX.