Ipx566: Better
You cannot turn off a food conveyor belt to dry a sensor. In meat packing or beverage bottling, equipment is blasted with hot water and sanitizers every shift. IPX5 is too weak. IPX7 is useless (you aren't submerging a motor). because it certifies the device can take the daily chemical washdown at high pressure without failing.
This is the most common debate. Here is the truth: ipx566 better
: Newer iterations of these modules offer lower latency for wireless audio, making them "better" for gaming or video syncing. You cannot turn off a food conveyor belt to dry a sensor