My 29 FB I still have the OEM dual station cable system. So far it has been fine but like ALL cable systems it will fail.
The only advantage I have seen is to prevent unauthorized steering of the vessel. Not a big deal and I have also forgot to perform the switch no big deal but in an emergency you may not think fast enough to control vessel with throttles until you can go below to change the helm.
Anyway my vote is for hydro system. I have installed a couple in years past and the installation takes up a lot less space.
In my case my my conduit to the FB is FULL of wire and removing the cable would ease that situation and running the nylon hose is much simpler and takes up very little space.
Telefex is the leader and as I recall a call to them and they will walk you through the process to order the correct installation kit.
If some of you captains out there have installed recently...posting photos of the install and list of parts would be nice on the site.
Safe boating,
Dave
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