Let us know about overheating and how that micro hdmi works out for you, if you go for the XM5. @Ninpo33
Sensor, codecs, processing and image should be like the XS 20.
A used S1 could be a great alternative if you don't mind the size. Great battery life, top image quality and exellent internal codecs, built like a tank, full size hdmi for braw and prores raw recording.