Have never used the Big Heat Brand, but have been using the Pelonic ceramic brand that I find at Ace Hardware for years. I use two of them in the RV and three in the stick house, expecially in the bathrooms.
Stan, Shirley & 2 Schnauzers (Sandy & Sassy)
RV: 2014 Itasca Sunstar 35F
USAF, Retired, Life Member: VSPA, DVA, VVA, VFW