Yeah 90% of the time I was loading the princess at 8 to 12 hours as well. Yes I start a couple more fires in the regency than the princess but really not a big deal.It's putting wood in them every 8-12 hours. And starting more than 1 fire a year. Yuck!
What I do like about the bk is the more even heat. In this house I never had very big temp swings with the regency. But the bk is absolutely better.