GM Frigidaire originally had skinny coils just like the Calrods when they first switched from exposed Nichrome coils. A wonderful stove company called L&G (not to be confused with today's Korean LG) out of Pennsylvania used to make interesing modular cooktops using the same thick-coil burners as the later GM Frigidaires. I've seen those burners also on some professional electric stoves. I don't know if the thickness means better quality, but NOTHING residential, gas or electric, heated up faster and blasted more heat into a huge stockpot of water than a thick GM Frigidaire 8" burner.