Progressive Dynamics.. Multiple suggestions
IF your existing power center is an intergrated (12 V 120 V and Converter in one) Then I think it is the 4600 that replaces JUST the converter part, continue to use existing distro center
IF you wish to replace the Distro center they have both 30 and 50 amp Distro centers both integrated and separate.
Independent converter, the 9200 line is top of the list.
I did a lot of research about 10 years ago. I was trying to find a better converter than the PD Wizard Controlled units... I tried hard.. NO NEW technology worthy of note has come out since... I FAILED.. there is none better.
RV and Motorhome Power Centers
Now my RV has separate converter 120 panel and 12 panel.. one thing I like on the 12 panel is the LEDs.. If a fuse blows the assoicated LED lights up making it very fast to find the blown fuse. Do not know if this is an "Accross the line" feature or if it is just selected models, but you have two of the links you need here to check out their products. I'm very pleased.
RV and Motorhome Power Converters from Progressive