Hi - does anyone have any experience of buying any of these? Have been researching and found that generally they are ridiculously expensive - around £500 for the BTU's we need. Homebase have the Classico series which looks great but is cheap - a plumber told me he wouldn't touch these as the steel is not good quality and they start to rot after a year or so. Wickes have some which are reasonably priced but not sure about the quality of those - any one have any experience of these? Otherwise any cheap suppliers of Acova anyone knows of???