I'm not very good at describing sound but the W5 sounds more airy to my ears. The lows seem tighter and the highs cleaner. I only combined the W3 and W5 with the Tin Audio T3's atm. But I do not like the fact that the W5 has no physical buttons.

Received my W3 two days ago. I do like it but like the audio of the W5 more. Nice to have real buttons though and to have the ability to use it over USB. The clip is also much better. All in all I am satisfied with it, especially for the discounted price.

Hi not sure if this is my first post but anyway you have to enable Hiby UAT in the settings of the Hiby music app afaik. Sadly I cannot get clean audio in UAT on my Note9, I get mostly jittering. Edit: it seems this was indeed my first post... :)