CDI
I am surprised at the response Gerard got from the CDI company. Many 26/260 owners have CDI furlers, including myself, and have had no problems. They are guaranteed for life - supposedly. Assuming you want a flexible furler, Harken does make a good one, plus there are others as well that now compete with CDI - the first in the flexible furler business. While Harken may be superior, when they first came out with their flexible design, Harken had to pull it off the market for a year while they fixed a poor design. I tried to buy it then and could not, and ended up with a CDI furler for my 26 and have had no problems with it for several years. Check this website's archives and you will find several articles about furlers. I think there are two or three options now being sold that owners have used successfully.