SK76B
No problem with hot/high, fast, proven. The lower rotor is not an insurmountable issue.
Lots of S76 EMS cabin options.
Using en-route times is problematic, distances would tell more as the various models get there in different times. Low-level the B will give you 2:20-2:30 endurance. I wouldn't cruise it low for an hour though, and you can then get 3 hours.