This aircraft, Pilatus PC-12, is on top of my list for go anywhere bush-pilot aircraft.
It has the range (2000nm), speed (280kts), big cargo door and extremely useful payload.
This Swiss made aircraft has sold 1000+ units already since entering service in 1994. PC-12 costs more than its competitors, but many recognize its value beyond the asking price.
How about the Cessna 208 Caravan (first service 1984 - 2000+ units sold)?
Beechcraft Super King Air?
Cessna 208 Caravan = 2.2 million baseline cost
Pilatus PC-12 = US$4.0 Million PC-12NG Executive
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PC-12 vs Metro 23
Specifications (PC-12)
RCMP PC-12, Winnipeg c. 2007
Weather radar on the wing of Pilatus PC-12 NG
General characteristics
Crew: one or two pilots
Capacity: 9 passengers standard, 6-8 executive (19 passenger)
Payload: 1,500 kg (3,502 lb)
Length: 14.40 m (47 ft 3 in) (59 ft 4 in)
Wingspan: 16.23 m (53 ft 3 in) (57 ft 0 in)
Height: 4.26 m (14 ft 0 in) (16 ft 8 in)
Wing area: 25.81 m² (277.8 ft²) (310 ft^2)
Empty weight: 2,761 kg (5,867 lb) (8,737 lb)
Loaded weight: 4,700 kg (10,450 lb)
Max. takeoff weight: 4,740 kg (10,450 lb) (14,500 lb/16,000 lb)
Powerplant: 1 × Pratt & Whitney Canada PT6A-67P turboprop, 895 kW (1,200 shp) (2x TPE-331, 1,100 shp each)
Maximum landing: 4,700 kg (10,450 lb)
Maximum payload full fuel: 539 kg (1,189 lb)
Tail wingspan: 5.20 m (17 ft 1 in)
Propeller: Hartzell HC - E4A - 3D/E10477K – 4 blade aluminum
Propeller diameter: 2.67 m (8 ft 9 in)
Propeller RPM: 1,700 rpm
Performance
Cruise speed: 500 km/h (312.5 mph/270 KTAS/280 KTAS @ 20000 ft (PC-12NG)) (318mph)
Stall speed: 120 km/h (74.8 mph/ 65 KCAS/66 KCAS (PC-12NG))
Service ceiling: 9,150 m (30,000 ft)
Rate of climb: 512 m/min at sea level (1,680 ft/min)
Wing loading: 174.3 kg/m² (35.7 lb/ft²)
Power/mass: 3.7 kg/shp (8.2 lb/shp)
Range 0 passenger: 4,149 km (2,593 mi) (2,239 nm)
Range 9 passenger: 2,804 km (1,753 mi) (1,513 nm) (1,150nm)
Takeoff distance over 15 m (50 ft) obstacle: 701 m (2,300 ft)
Takeoff distance ground roll: 450 m (1,475 ft)
Landing distance over 15 m (50 ft) obstacle: 558 m (1,830 ft)
Landing distance ground roll: 228 m (945 ft)
