You forgot the pure freedom heater
i got a immersion, hate using cold now
Everyone keeps going on every winter about going hot,Ive used hot for over 3 years and imo hot is best used in the summer, when you can turn up the heat to help clean fly/bee spots spiders poo etc.You cant use hot when its too cold as it still freezes and if its too hot you can crack glass
heres a link to anyone thats interested. cant see any prices thoughhttp://itrheat.com/