Don't put too much stock into hours. I would rather have a well maintened high hour boat than a low hour neglected boat. A lot of boat owners maintain their boat based on hours alone , so low hour boats do not see annual routine maintenence.
Based on your search a 15 y/o boat with 700 hours would have been used on average 46 hrs a year. A well minted engine should go what , 2500 hours , so based on its use you have 39 years to go before TBO.
I would look at the boats condition over all , not just hours alone.
With that said , look at 97 Snob , sunsetter Lxi , sport nautique , mc 205.