Got myself one with heated seat, heated water (tankless water heater, not a connection to a hot water tap that takes ages to warm up), and even a hot air dryer thing that I only really use in the winter.
Cost a hundred bucks, best hundred bucks I've ever spent, I'll never go back.
Cold water ones are good too, more practical even, but the water gets cold here in the winter, make your brown eye blue lol