I have almost one year of sailing my 37 year old bicentennial sailboat that took less than two months from
shipping across the country to splashing.
Survey was two thumbs up except for
cleaning off three years
on the hard and a minor
engine issue of a rusted off mixing valve.
Maintenance, stewardship, goes a long ways towards making a sailboat, home, car, relationship, last and last.
I would say
survey for any older larger sailboat.
I purchased two 32' almost identical sailboats in a couple weeks time. Night and day difference in the condition of these two boats. Go vintage, but buyer beware. If you are not careful, you will end up with a
parts boat like I have.