It is my understanding you created FSBpro and EA Studio because you found weaknesses in the MetaTrader backtesters and wanted to develop a better backtester.  If FSBpro and EA Studio are better backtesters than MetaTrader then I would prefer to use them to do my backtesting.  What I am trying to figure out is which of the two, FSBpro or EA Studio, is the best backtester to use if I use EA Studio to create my EAs.