Mode 2 is what most everyone flys in the us . You should fly mode 2 it will be easier for you to be taught and if someone needed to fly your aircraft they could.
the difference in the modes is what control is on what transmitter stick. Mode 2 is ailerons and elevator on the right and throttle and rudder on the left to me this is more like a full scale aircraft.
is one easier than a other except for the reason I gave above its what you get taught