Bell 525 Relentless vs Daher Tbm 960 vs Piper M600 Sls vs Robinson R66

The Bell 525 Relentless and Robinson R66 are helicopters, while the Daher TBM 960 and Piper M600 SLS are single‑engine turboprop airplanes, so their missions differ: helicopters trade speed and range for vertical takeoff, landing, and hovering. In category, the Bell 525 is a larger, twin‑engine, IFR-capable helicopter aimed at corporate and offshore-style transport, whereas the Robinson R66 is a lighter, single‑engine turbine helicopter oriented to utility and private use. For range, the TBM 960 is the longest‑legged of the group (typically around 1,500+ nautical miles), the M600 SLS is next (roughly around 1,000–1,200 nautical miles), and both helicopters are shorter-range by comparison, with the Bell 525 generally in the several-hundred‑nautical‑mile class and the R66 typically a few hundred nautical miles depending on reserves and payload. For passenger capacity, the Bell 525 generally carries the most (commonly configured around 10–16 seats), the TBM 960 and M600 SLS are usually flown with 1 pilot plus up to 5 passengers, and the R66 typically seats 1 pilot plus 4 passengers.