I've never tried electric stuff in my boots, but I wear Sorel boots, never had cold feet.
http://www.sorelonline.com
I dunno how good they are now though, because Columbia Sportswear bought them out. They used to be a great company from Northern Canada but then stupid Columbia bought them out.
They look basically the same though, and they feel the same, so I figure they are pretty close. Very warm boot, good traction on them too. Natural rubber soles so they do not freeze.
http://www.bolliger-mabillard.com
I Love B&M Coasters.