Bell 525 Relentless vs Pilatus Pc 24 vs Piper M600 Sls vs Robinson R66

The Bell 525 Relentless is a large, fly-by-wire twin‑engine helicopter aimed at offshore, corporate, and mission operations. It typically offers executive seating for roughly a dozen-plus passengers and has medium-to-long helicopter range, generally on the order of about 500–600 nautical miles depending on configuration and reserves. The Robinson R66 is a light, single‑engine turbine helicopter for private and utility use; it carries a pilot plus about four passengers and has short-to-medium range, roughly around 300 nautical miles. The Pilatus PC‑24 is a twin‑engine light business jet designed for fast travel and flexible airport access. It commonly seats about 6–10 passengers in executive layouts and has long range for its class, roughly around 2,000 nautical miles. The Piper M600 SLS is a single‑engine turboprop for owner‑operators; it typically seats one pilot plus up to five passengers and has medium-to-long range, roughly around 1,000–1,400 nautical miles, often trading speed and operating simplicity for lower costs than jets. Overall, PC‑24 leads in speed and range, Bell 525 leads in rotorcraft capacity and mission capability, M600 SLS balances range and simplicity, and R66 emphasizes affordability and light utility.