Strictly FWIW, I would put Pearson's much lower down on your list, at least the ones from the 80's. When we were shopping we toured one (about 33') and got to the rubber gasket stanchion bases - wobbling back n forth with water oozing out, and walked away. It's a pretty sure way to allow water into deck coring, and no other production was using this that I know of. This was a very long way from the EY method of attachment of deck hardware in that era.
Water intrusion into the decks and balsa coring is perhaps one of the more serious and troublesome gremlins to deal with in buying an older boat.
It’s not always that easy to detect and can prove a costly but needed/critical repair when finally realized.
One of the members at our boat club had a moisture meter he would rent out to fellow members for a nominal fee (obviously offsetting his own costs). We since have bought our own. They can be found online in prices ranging from a little over $100. to several hundred dollars.
A good marine surveyor will certainly have and use one for any vessel you have him check - but - the use of one by you personally can help quickly determine whether or not to spend your money on a survey.