Piper M350 vs Piper M500 vs Piper Seneca

The Piper M350 and M500 are pressurized, single‑engine turboprop aircraft aimed at owner‑pilots and small business travel, while the Piper Seneca is a light, unpressurized (in most variants) twin‑engine piston aircraft often used for training, personal travel, and short‑to‑medium business trips. In range, the M500 generally leads thanks to its higher cruise efficiency and typical fuel capacity, usually supporting roughly 1,000+ nautical miles in real‑world planning, while the M350 is commonly in the high‑hundreds to around 1,000 nautical miles depending on power settings and reserves. The Seneca’s practical range is typically shorter than the turboprops, often in the mid‑hundreds of nautical miles, though it varies notably with model, load, and altitude. For passenger capacity, the M350 and M500 are typically configured for about five to six seats including the pilot, with cabin layouts optimized for comfortable, pressurized travel. The Seneca commonly seats six to seven depending on configuration, offering more seats on paper, but with different comfort and payload tradeoffs compared with the pressurized M‑series.