Beechcraft King Air 360 Er vs Bell 525 Relentless vs Daher Tbm 960 vs Robinson R66

The Beechcraft King Air 360ER and Daher TBM 960 are pressurized turboprop airplanes, while the Bell 525 Relentless and Robinson R66 are helicopters. For range, the King Air 360ER is the long‑leg specialist, with roughly 1,500–1,800 nm class capability depending on payload and reserves, suited to longer business or utility missions. The TBM 960 is also long‑range for a single‑engine turboprop, typically around 1,000–1,400 nm class, favoring fast point‑to‑point travel for smaller groups. The Bell 525 is a long‑range, high‑speed commercial helicopter, generally around the 500–700 nm class, optimized for offshore and executive rotorcraft missions rather than maximum distance. The Robinson R66 is a light turbine helicopter with comparatively shorter legs, commonly around 300–400 nm. For passenger capacity, the King Air 360ER typically carries 6–9 passengers plus crew, the Bell 525 is usually configured around 12–16 passengers plus crew, the TBM 960 is commonly 4–6 passengers plus a pilot, and the R66 is a 4‑ to 5‑seat aircraft including the pilot.