Find a sailmaker
Went throught the same process for my '77 h27 last summer. I used the web (including the Doyle stuff here) to identify companies that are in the business for my boat (Doyle, UK, North among others.) Then I phoned the local loft to talk with each one. My objective was to find a sailmaker who would take the time to evaluate Lady Lillie, her sails, and our sailing plans (daysail and week long cruises)and advise me from his knowledge and experience. I got quotes from 3 lofts after deciding based on that advice to buy a new main, and an APC. That kept the price competitive, but I made the decision to go with the Doyle loft nearby, because the sailmaker there best met my expectations for his involvement. He met the competitive prices, and delivered sails that exceeded our expectations on daysails at the end of the season. (5% less heel and over 1 kt faster with the new main.)