B206 V Ec120
 

Interesting to try and compare 2 such different machines.
Its like saying shall I buy a old E type Jag or a E class Mercedes

Both are great machines, both are representative of their era (60's v 90's)

The obvious difference is the cost!! However if I won a competition and had a choice between a New B206 and a new EC120 I would go for the EC120

Higher cruise speed, better/smoother turbulence capability, Baggage space, open cabin, energy absorbing airframe/seats, - all better in the 120, Only real benefit of running a B206 would be cheaper running costs and you need less hangar space for the 2 blade format.
Either way you are a lucky man to have the choice, Do a rating in both and see what you think, with the sums involved its a minor cost.

-Enjoy