MD Helicopters support   

I've got time in 269, 369, 900/902. I'm calling BS on great power in the 900, especially at higher altitudes and temperatures. It never came close to its performance charts. 
I've seen the 520 and 600 at work. Same story there. Did I say unreliable? Oh and support, there is none.

Look at the AS 350 B3e. Work horse, reliable and support is ok. Tail rotor is not a worry in the hands of a component pilot.

Same for the Bell 407 GXP except the support from Bell is the best in the industry and in a lot of circumstances, performs as well and the AS 350. As a bonus, the 407 is a bit faster than the AS 350.