When sourcing RC helicopters, prioritize brushless motors for higher efficiency and longer lifespan compared to brushed versions. Ensure the flight control system includes a 6-axis gyroscope for superior stability, which is essential for entry-level users. For power systems, verify that Lithium Polymer (LiPo) batteries have a high discharge rate (C-rating) and include overcharge protection. Additionally, check the remote control frequency (2.4GHz is standard) to prevent signal interference in environments with multiple active units.