Bell 525 Relentless vs Md Helicopters (mcdonnell Douglas) 902 Explorer vs Piaggio Avanti Evo vs Piper M600 Sls

The Bell 525 Relentless and the MD Helicopters (McDonnell Douglas) MD 902 Explorer are twin‑engine helicopters, while the Piaggio Avanti EVO and Piper M600 SLS are fixed‑wing turboprops. For range, the Avanti EVO generally leads among these, offering roughly 1,700–1,800 nautical miles depending on reserves and configuration, making it the strongest choice for longer city‑pair trips. The Piper M600 SLS is also long‑legged for its class at about 1,400–1,500 nautical miles, aimed at owner‑pilot or small executive missions. Helicopters trade range for vertical access: the Bell 525 is typically around 500–600 nautical miles and the MD 902 about 300–400 nautical miles, well suited to offshore, EMS, and point‑to‑point access where runways are unavailable. Passenger capacity follows mission and cabin volume: the Bell 525 is usually configured for roughly 12–16 passengers, the MD 902 commonly carries about 7–8, the Avanti EVO typically seats 7–9, and the M600 SLS is usually 5–6 seats (including the pilot).