Sennheiser 508900 CX 400BT True Wireless Earphones $146 Delivered @ Amazon AU
I bought these when they were on special for $150. Pretty decent quality. I also have the Google Buds Plus. These have better sound quality but are less comfortable than the Buds Plus and lack some of their features (like audio pass through)
Great buds though.
They're difficult to compare because they're different product types.
Earphones can be buds or canalphones.
Canalphones are inserted into the ear with an airtight seal to work properly. They have better sound, especially bass, and they isolate the user from outside sound.
Picked these up in a JB deal for $126 specifically for the vaunted audio. Intention was to use them mostly for macro photography hikes but they've become a constant companion recently. They really are worth it for that purpose alone I think, despite lacking elsewhere. First true wireless IEM's I've used that eschews the ubiquitous "for wireless" asterisk.