Buyers must prioritize Amperage Rating (Duty Cycle) to ensure the torch can handle the required workload without overheating; for instance, a 60% duty cycle at 200A is standard for industrial use. Additionally, verify the Cooling Type (Air-cooled for portability or Water-cooled for high-intensity heavy welding) and ensure Ergonomic Handle Design to reduce operator fatigue during long shifts. Compatibility with standard consumables (nozzles, collets, and gas lenses) is also vital for long-term maintenance cost control.