acording to some traders it will not working well when the market is ranging .it is the main problem with the robots.you can make some nice profit then you will loss them back slowly when the contidions are not right.l think still manual trading is the best.

Originally posted by ermaniso2011

acording to some traders it will not working well when the market is ranging .it is the main problem with the robots.you can make some nice profit then you will loss them back slowly when the contidions are not right.l think still manual trading is the best.

That is why it is recommended to use such EAs when volatility level is high.

Its worth checking out verified stats of sonic R : http://www.myfxbook.com/search/sonic.  As you can see, under systems, there aren't any particularly successful traders using the system.