considering a new stove, the burley Wakerley 12kw anyone had any experience of them? the questions i have is if they are so insulated then how do we get the heat? an old stove may smoke and lose heat but there is a heck of a lot of heat transfered through the sides. so these super efficient stove are they any more beneficial in making the house warmer. ? i have no experience of these stoves so i am unsure if there warmer or not?