The Esse is awesome - it is a "whole house" heater though - belts the heat out - if you just want a few flames "for effect" it isn't a good choice. Having said that, we love it, throw a big log on every four or five hours and a handful of smokeless last thing at night and you have a warm house, free cooking, permanently hot kettle and pre-heated oven
The Broseley Serrano 7 is a very small stove - only 2kW - the Ironheart puts out 10kW at peak - there's a huge difference there - beware the Ironheart in a modern, well insulated house with small rooms as you will cook - but perfect in an older place