Helmet fire- I do not prefer the single for cost, but for range, power margin and simplicity of operation for the pilot. The only 2 singles I would push based on the above is the b3+ and the B4. We operate currently on GPS with terrain warning in all our Squirrels. The b4's have the KN150 and the one the EX500 all inclusive package incl Jepp etc. We do not do night ops currently but was looking at 2 pilot nvg ops in the B4. Budget is an isuue but not the major concern.
As was said before, a dangerto iFR remains mountains and despite us being at 6000ft we have lots of those with clinics in the valleys or mountain tops. Thunder storms and high wind conditions swirling from all directions is a given. We work our fuel range on a 15kt head wind both directions because you are not guaranteed of a head then tailwind scenario.
If I can dream I will take a N3 Dauphin and nurse her when heavy but have the range and IFR. 139 will also do great watching the range. Landing zones and clinic size will keep me stationary though. Most of the clinics are smaller than those 2. We use a Squirrel for a mobile clinic and the people think it is magic?
If I can really dream I will take a 225 in Jigsaw confic.