The Technoline works with Heavy weather, same as my La Crosse. I found an online manual here-
https://www.manualslib.com/manual/830948/Technoline-Ws-2307.html
The Velleman works with Easy weather. Here is their webpage with links to downloads-.
https://www.velleman.eu/products/view/?id=374584&country=us&lang=en
I am leaning towards the Technoline ws2307 as it appears to use the same sensors as the La Crosse, of which I have some spares.
Also after a forum search for ws2307 it seems that some other forum members have used them.