Are self-inflating pads better than inflatable air pads?

They serve different priorities. Self-inflating foam-core pads tend to be more durable, warmer for their thickness, and quieter, but they're heavier and bulkier — better suited to car camping. Pure inflatable air pads pack down smaller and weigh less, which is why backpackers and ultralight hikers favor them, at the cost of puncture risk and sometimes a crinkly feel.