The rears where in perfect condition and about 50% worn so I greased them and put them back.
The fronts were also OK but 70% worn so I fitted some new ones, the new RC5+ appear to have a brass backing which looks good.
I greased them all with Padig clear tec and fitted new pins and retainer and brake squeal is almost completely eliminated.
The worn great straight out of the box on old Padig discs, no need to break them in, they have better cold bite and modulation also.
Here are some pics of the old, you can see crumbling round the edges but this is normal from this kind of pad in my experience:
20161029_135225 by Richard Fanders, on Flickr
20161029_135230 by Richard Fanders, on Flickr
20161029_135237 by Richard Fanders, on Flickr
20161029_135241 by Richard Fanders, on Flickr