I've replaced the panel on my FIRST 42 with one from Panel-Tronics.
They're great to work with. The unit I installed has 24 brakers with
Line Voltage and Load Current guages.
I went through a dealer I met at the boat show and got a great discount on the panel.
I figured out all that I wanted a breaker on, and the size of the breaker to be used...It came in just how I wanted it. The unit was a little smaller than the panel I removed so I used a piece of frosted white acrylic that filled the space and installed the panel in the acrylic.
The frosted white acrylic has looked so good, I'm changing out the brown tint units in the Galley and both heads.