When you compare solar panels, look beyond the advertised wattage and consider efficiency, performance in hot weather, product and performance warranties, expected degradation, and the manufacturer’s reputation. Compare the full system price, including the inverter, mounting, installation, monitoring and any switchboard work, rather than comparing panels alone. Ask installers for an itemised quote and check that the products and installer meet applicable Australian requirements. Your best option will depend on your roof, electricity use, budget and local conditions, so independent advice from a qualified solar installer can be useful.