even though
Expert Advisor 
is great in make trades for us automatically,
after some time, i still feel that manual trading is better.
Having tried on quite a lot of EA that sound promising, but at the end the EA lose my money automatically.
Recently, my manual trading almost double my account balance from 2600 to 4488 with floating profit 326 within 1 week.
This even enhance my opinion that manual trading is better, even though you have to put a lot of effort and time to learn.
I also found that nowadays, most of the EAs having a few similar features:
using scalping strategy & trading during off market hours- this is because this kind of strategy having high success
rate 
, so that to attract customer by showing the back testing results. But it's killing your account when it hit the stop loss.
if you think carefully, if the spreads on the
currency pair 
is 2 pips, and you are target for 10 pips, then the "cost" of your trade will be 20%. if the stop loss is 50 pips, then you are risking 50 pips for earning 10 pips. Personally i don't think the risk/reward ratio is great. My advice is stay away from those scalping EA that do not set stop loss!!!
I'm more interest in swing trading, and trying to catch the whole trends. During recent volatile market condition, you can easily catch 100+ pips profit.
Anybody can suggest some great swing trading EA?