We plan on putting a log burner in next year, but just have the open fire for now. I'm actually surprised at how much heat it does give out, as I didn't expect that. In the evenings, we huddle round it and turn the heating off. Like Anne, we mostly burn the indoor coal stuff, and we also go through a hell of a lot of it + kindling. We don't use much wood, but what we use is from trees we cut down in the garden, so that's free at least!
Balmerhon, with your glass door and fan, yours almost sounds like an open fire with some of the benefits of a wood burner! And if you already have wood and kindling, it's probably a smart move to make more use of it.