I would go with the FX. I mean yea someone just completely broke it down and ok so the regulator on the Etek is better but I mean you could just buy the regulator if you really wanted to upgrade that. I think if you have $500 and you are looking for a gun to buy then the FX is a better choice. I mean you get the OLED screen, reversible trigger, they come in tons of colors, many modes. I wouldn't care about efficiency or kick because you could always upgrade parts of a gun, I mean you have individuals who even upgrade superguns such as Ego11 and DM11 and you would think with that price you wouldn't need to. I'm just saying if you are going to be paying the same price for the gun, then its smart to go with the gun that offers more because in the end you will probably wanna add new options to the gun to make it better anyway.
And I'd just like to add that the FX wins by a landslide on a bullet-point comparison, but in the real world the Etek 3 smokes the FX. Blue Fellow had it right.
Lol yea I know...well I didn't realize how late I was but hey I just joined lol. I don't even know how I got to this topic haha I remember doing a google search on something.