Yeah they were pretty great but DeCONZ didn't support them. Which just happened to be the stack I chose.

Apparently they were supported through the HA integration but not in the GUI. They also work with ZHA as far as I know.

I still see some on Ebay, not sure if they can be shipped to Europe though: https://www.ebay.com/itm/133779313546?hash=item1f25de538a:g:... . This tends to be an issue.