from perfect, but so many gadgets that we and our guests own come with matching plugs that we use them
I built Milvina with 7 outlets, but now have 17 on board.
Several have semi permanent USB adapters plugged in for iThings, Samsung mobile hot spot etc.

While there are other 12 volt plug/socket systems that are superior, the ubiquity and convenience of the cig lighter are major factors.

Cutting off the cig lighter plug and installing another would be a nuisance for us, and unacceptable for guests. If we modify our own gadgets to fit another 12 v outlet, then they would not work on other boats when we are the visitors

We use fairly cheap Seadog or similar SS units.