Yeah, I started with the HS110's and most are still going, only 2-3 are now the slim one's where I wanted the extra space / socket. Given there's no real price difference from what I remember, may as well get the slim one's
Assuming they are numbered like the US models (which they seem to be), the KP125 is also a power-monitoring WiFi plug that works with @djgutheinz’s Hubitat integration.
I can't see the 125 on any AUS sites, but still good to provide an international flavour to the options listed... Sounds like it's the new version of the 115.
I'm an sonoff S31 fan since they can do mqtt or local control without flashing firmware.(aka no cloud). But there are lots of good choices in this space.
(note the newer S40 do not have local control... boo sonoff - they said only 5% of users used it, so they dropped that support in the new products).