As your title is upgrading to a turbine, just a suggestion that you do not consider that the Jetranger is the only turbine out there.
In automobile terms it's like getting into a Morris Oxford. Nothing wrong with the basic design and engineering for its time, but it is years out of date, even if you buy a new one. Even Bell themselves have decided recently not to build any more. That will not affect the spares situation as there are a zillion spares out there for the 206, but it shows that they think you should go for one of their more expensive options.
On the plus side, they are a smooth ride, on the negative, it's embarrassing to be overtaken by an R44 on a 200 mile leg.
I am biased towards another turbine manufacturer so I won't say what you should do, but do look around.
FWIW