Cheese ,
We got a runswick last year and found it to be fantastic , no more drafts , coal or firelighters , we light at 6pm and let it die down at 9pm , the room retains the heat as there is no draft , we burn logs that have had time to dry and find it only needs a fraction of the fuel needed by an open fire . However we were not able to fit it into the old fire back ( which was slightly cracked) and had to remove lots of rubble before it fitted in snugly.
This years project is a Nestor Martin IT13 insert for the sitting room , I have lit it for the second time tonight , and it looks great , the flames dance on the wood , I'm not sure that it 'blasts' heat into the room as quickly as the Runswick does when you light it .but it's too early for me to compare .
pjq