I recently upgraded to a Lopi Liberty.  Last night was the first overnight burn with low of 24/no wind.  I loaded the stove up with mixed whatever I had handy at 9:00.  I really didn’t pack it tight at all and used medium size sticks.  Woke up at 5 with a good bit of coals, stove still throwing a lot of heat, and the house 72.  Our house is 1950 sq feet with the stove in the main open area with a 18 foot vaulted ceiling.  Our last stove was a little small for this space and we really had to push it to keep warm.  Although not a really bitter cold night, I’m very impressed with the lopi.  It throws some serious heat!!