They are fine pickups! I've used Wilkinsons in my Frankenstein basses at times.
I recently bought some no-name J pickups off Ebay for £20 and the wires were falling off the bobbin. A total piece of junk! Wilkinson's stuff, for the same money, is far superior. Maybe also check out Entwistle, Artec, G&B and the stuff Axesrus sell (which may also be G&B/Artec as rebranded, which in turn might all be OEM stuff from one giant factory).
The P pickup I have, which came from a Vintage V4 bass, is pretty good. Not the hottest pickup out there, so I guess it could be quite vintage voiced.