I would go with the progressive Dynamics 4600 series, this is an "Upgrade" kit designed to replace the electronics in your existing converter.
Thus it's less expensive than replacing the entire power center.
If you wish... they sell those too. You already have the link to the store in the last post.
NOTE: When I got my rig in 2005 I did some heavy duty research into converters.. I could not believe they put the best in my rig.. but they did.
The "Best" actually is a fairly large selection of converters but the Progressive Dynamics units with the WIZARD (Either built in or plugged in) are very clearly on the list of "BEST" they are 3-stage plus one additional feature.. And US assembled. Good company rep as well.
