Mex - I have two of these in my TRUCK setup. One up front and one in the back of the center console. Oh just remembered there is a third on inside the truck center console. Think they all came from WALMART or LOWES... Having the DUAl PORTs at each location is great...
I also added a couple of these BLUE SEA permanent mount type sockets in my off-road trailer.
I have alot of USB CHARGER connections these days between the Ham Radio, Cellphones, and computers etc...
I would think the permanent mount type like from BLUE SEA would be the most quality unit. Plugging an adapter into a 12VDC socket is only as good as the connection it makes. Some of those 12V cig lighter sockets are not very high quality connections...
If I am going to install a cig lighter connection and plug in my off-road trailer for something I would purchase a matched set from BLUE SEA for best results. This is especially good for max DC AMPs you are requiring to use. Bad connections always results in heat as you are very aware of...
Roy Ken
