The Pearson is a nice boat. I sailed one in the BVI. It lives well and sails ok. Build quality is better than agricultural but not yacht quality. Lot's of liners and prefinished joinery. I certainly wouldn't kick or cry of that was my only choice. The 447 is an entirely different league. Very stoutly built and sails beautifully. Age alone shouldn't disqualify a boat but all things considered an old 447 is like an old Benz. It's might need a little work but it's still very solid. The Pearson wouldn't be as likely to be as enduring and might require more work and money to restore.