Does anyone have any experience with heating pads that are EMF safe? I've read about far infrared heating pads and the jade stone version is advertised as being emf safe. On the other hand, I read about Venture far infrared heating pads with heating elements made of micro carbon fiber. Venture doesn't lay any claim as to being EMF safe but they look way more comfortable as they are lined in fleece and more lightweight than the jade stone version. Has anyone tried either of these?