My favorite cruising furler is the Kiwi made Reef-Rite. Designed and manufactured by Bob Graham of Dove Bay in the Bay of Islands, NZ, it incorporates several features that set it apart from its competitors:
1. It uses one or more standard automotive bearings and seals
in each load bearing location. These can be replaced inexpensively anywhere in the world without waiting for expensive specialty bits to be shipped in from "civilization".
2. The foil extrusion is extremely robust, and the joiners are even more so. Includes full length sleeve bearings between the foil and the stay.
3. The lower furling
drum incorporates a set of pawls (similar to those in a winch) which take the torque loads when the sail is reefed. This relieves the furling
line from the heavy loads imparted by a reefed sail in storm conditions and will prevent accidental unrolling when fully furled (something that has destroyed many a sail).
The only drawbacks that I have noted are slightly more weight aloft and a steep price
tag. An apparent but actually insignificant flaw is higher unloaded friction, due to the seals
used. Under load the system exhibits low friction losses.
I have no connection with this firm, and do not even currently own a Reef-Rite furler. Had one on Insatiable I, wish that one was on I-two!