by brian_bp » Mon Aug 27, 2007 5:17 pm
What I have heard, including from a local supplier of both Dexter and Flexiride, is that the Flexiride is a few percent more expensive.
I can't imagine a reliability problem with the Flexiride compared to the Dexter. The splined connection is just solidly bolted together (no obvious way for that to fail other than rusting together), and the rubber part is formed in place (rather than four rubber rods inserted into spaces) so it should be better; the formed rubber is also distorting in a preferable manner to the "squishing" action of the Dexter design.
However, I have no personal experience with the service life of either. From reports by other owners, many Dexter-type units eventually fail (usually just sag and lose springiness, not fail catastrophically), but that usually takes decades. Flexiride are much less common so I don't even have anecdotal evidence to pass on.