It's not just about operating costs etc, is it.
We are living in the 21st century now and things such as duty of care/risk assessments etc have to be considered.
I would seriously also look at crashworthiness issues.
The 206 has that woefully inferior tail rotor authority issue hanging over it too.
On a separate note: bear in mind the spares and servicing scene.
A helo sat on the deck waiting 4 days for a replacement part for instance, is just scrap metal
