I had to check my 2011 Conrad catalog, it says the WD1 is compatible with all (2011 era) Weller tools up to 80 Watts.
Don't know if they changed anything in later series but at least it includes WP80, WSP80, LR21 and WHP 80 and likely more.
My WDD161V station, that is likely similar to the WD1 from a compatibility point of view is
happy with any heating element above 7,3 Ohms and a PT100 temperature sensor.

I have a old wtcps magnastat self-regulating iron that I use with this station (with a fixed resistor in the plug to mimic a temperature sensor, set temperature above this threshold and the 24V ac is on, and the iron warms up.)
And I'm also working on a temperature chamber (50 degrees Celsius minimum) for my volt-nutting experiments..
A compatible plug is this one:
https://secure.reichelt.nl/nl/nl/din-stecker-6-polig-mas-60-p11200.html?&nbc=1Pin-out could be found somewhere online, but cant find it at the moment.
I could look it up in my notes if required.
To answer your question, I like the WSP80, its a good allround use iron, although tips are fairly expensive they are easily replaced or changed out for different shapes and sizes and they last a looong time.