Bell 525 Relentless vs Enstrom 480b vs Leonardo Aw189 vs Piaggio Avanti Evo

The Bell 525 Relentless and Leonardo AW189 are large, twin‑engine helicopters aimed at offshore, SAR, and corporate shuttle missions. They sit in a similar category, with typical passenger layouts around the mid‑teens (roughly 12–16 depending on configuration) and medium‑to‑long helicopter range, commonly in the several‑hundred‑nautical‑mile class, with the AW189 generally known for strong payload/range utility and the 525 positioned as a newer, high‑speed, fly‑by‑wire contender. The Enstrom 480B is a much smaller, single‑engine light helicopter primarily for utility, training, and personal/corporate use. It carries far fewer passengers (typically 4–5 including the pilot) and has a markedly shorter range than the 525 or AW189. The Piaggio Avanti EVO is the outlier: a pressurized, twin‑turboprop fixed‑wing aircraft rather than a helicopter. It typically seats about 7–9 passengers and offers substantially greater range and cruise efficiency than the helicopters, making it better for longer point‑to‑point travel where runway access is available, while giving up vertical lift and hover capability.