The choice depends on your power source and how you travel. 3-Way Gas Fridges are silent and offer total independence if you have limited solar, as they can run on LPG for weeks. They are the traditional choice for remote NZ baches and older caravans.
However, Solar (12V Compressor) Fridges are becoming the NZ standard for modern setups. They cool down much faster, perform significantly better in high summer temperatures, and don’t require gas venting or level parking to operate. If you have a reliable solar and battery system (especially Lithium), a 12V compressor fridge is generally the more efficient and powerful choice.