Thanks to those who answered.
In my opinion, I’m leaning torward the XLR solution, as it feels more professional. The only thing that was making me consider the cigarette lighter plugs, was that I’d have the ability to power my camcorders (canons) from them as well. I am (probably too) worried that they’d come unplugged at the most inconvient time, and as I have an abundance of batterys for the cams, it’s not really an issue.
Dave M