I found one I wrote a while ago - so excuse the copy paste......
I should probably save the post I wrote on this, as I have replicated it a number of times, so........This is all preamp aside
Delano - hifi, not sterile, more modern sounding, great clarity, fine to use with effects but you have to know what you want to do
Sandberg - I am pretty sure at some point there was a generational shift, but, more classic/vintage sounding, lower output, but just the right output to play with pre amps etc and not overload the front end like the G&L MFD pick ups do - very very good sounding, but I think their split coil is the weakest of the lot (dunno why, not as good as their jazz)
Sandberg black label - as above but with even more punch and zing, more of a modern nod and a real punch to the guts - especially good in with SL basses, as they need more oomph being lightweight - very very good pick ups
Haüssel-like the sandberg ones on steroids, huge balls and character and they also do a big pole version I have used in another bass - so much beef that Jon Snow, the TT which @DJ’65 has now solo’d on the neck is practically a P bass sound - very good pick ups, slightly harder to tame with pre-amps etc.
very quick overview IMHO