Hmm. Perhaps I need to rethink my power facilities
I like the DIN connectors for the way they click positively into place and seem to be robustly made. But they are relatively pricey. At the moment, I don't have heated kit (may change next winter) and my main use is powering the satnav, charging my phone and operating a compressor - all of which came with car-type plugs, so at the moment that is all I need. I like the SAE type for their simplicity, though.