i have use EA for 1 years, and find out most of the EA lossing , because those EA chase the trend instantly , that is chase trend EA, which can profit only on strong market ~~

but however the market 80% of the time is being weak

and many EA use a very wide stop loss e.g. 2000pips of eurusd and short tp such as 20 pips , which is easily stop out by broker house for those account below 2000usd (0.1 lot)

ATC 2008 nub 1 EA is a middle term investment EA , which take profit is 460 pips, although it TP is long , but when the price is linger at a fixed range, it will lost lots of chance to enter market, when hold a position for a long time
so a best EA is to determine the market now is being weak (price fixed at a range ) or being strong(to chase the trend break-out system) ~~

what do u think ?