heading vs. normal lock
 

So, I'm a newbie and am trying to spend as much time with my RC simulator as I can before my Dragonfly 60 arrives by the end of the week. I figured out that forward flight is not that hard with the sim, when on 'normal lock' and really difficult when on heading lock .. so, amongst all of you experienced pilots, what are rc helis on? normal or heading? is this a matter of gyro sensitivity? Does it even exist for rc helis or is this just a sim feature??
Obviously I'd like to train with the one that is more realistic ..
thanks,
[8D]