BEST DS1 HULL BUILDER

I am looking to buy a daysailer1 and set up up for competitive racing. Is there any information or general opinion as to the best years/builders to look for? Thank you.
All about the DaySailer
https://www.forum.daysailer.org/forum/
https://www.forum.daysailer.org/forum/viewtopic.php?f=1&t=3160