Ralph:
If your partner's mom's skillet isn't a Farberware one, trust me, it may be a great skillet, but unless it's a 1960s Presto, it's not as good as the Farberware skillet. Even the vintage Presto has the cleaning/appearance problems associated with cast aluminium.
The Farberware electric skillet is stainless with an aluminium-clad bottom; it's very even heating and cleans up like a dream. It has been available in several variations over the years, as has been noted. The one I have sports Farberware's high-dome lid, meaning it can hold bulky foods like roasts and chickens.
My sister had the Farberware for years, and praised it to the skies. Since I had a Sunbeam that I felt worked okay, I chalked her praise up to not knowing much about electric skillets- she's not a kitchen person and is easily impressed when one of her purchases works out well. But then I got a Farberware unit of my own, and I saw what she was talking about. It really is better.