I have a small unknown brand stove now, It needs to go. It last about 4 hrs, heats great but I would like to keep it running through the night at least. I have to have a rear exit flue so it can go straight back in to the fireplace and up that chimney with a clean out "T". The setup I have now burns great but just needs to last longer. Was considering a wonder wood stove but have seen mixed reviews. I'm not to picky on style, function is really the name of the game here. Oh and now I'm probably really asking a lot here for my $800 bucks but a top load would be awesome.