Bell 525 Relentless vs Piaggio Avanti Evo vs Piper M600 Sls

The Bell 525 Relentless is a twin‑engine helicopter, best suited to vertical lift missions such as offshore transport, EMS, and point‑to‑point access where runways aren’t available. Its range is generally in the mid‑500‑nautical‑mile class depending on payload and reserves, and it typically carries 1–2 pilots plus around 10–16 passengers depending on cabin configuration. The Piaggio Avanti EVO is a twin‑turboprop, pressurized, fixed‑wing business aircraft optimized for fast regional travel between airports. It generally offers roughly 1,500–1,700 nautical miles of range and commonly accommodates 1–2 pilots with about 6–7 passengers in an executive layout. The Piper M600 SLS is a single‑engine turboprop, pressurized personal/business aircraft positioned below the Avanti in size and operating complexity. Its range is typically around 1,200–1,500 nautical miles depending on conditions, and it usually carries 1 pilot with up to 5 passengers (six seats total).