Hi
I advise make your decision based on insurance requirements... With no CPL you may not be able to fly one or either on low hours... Here in UK the EC120 is usually more restrictive... Normally on the 206 you need to gain 25hrs p1 before you can fly it on your own.... so you dont fry the engine..either on start or in flight. The Ec120 may be more restrictive...?
Please do let us know what you find out.