Blaze King Princess or a RMH

I am currently trying to choose between a Blaze King Princess or a RMH.  Reasons for the princess, traditional fire viewing, flexible (smaller) foot print, efficient, insurable.  Reasons for the RMH, more efficient, less expensive.
Our home is single story 1969 built with an open basement; it would operate like in floor heat.  Currently we have LP forced air, not even a fireplace in this house.

How much more efficient would a RMH be?  
Any help would be appreciated making a decision!

Ps. My goal this winter will be to put a RMH in our garage

I should clarify, we are in central Minnesota, zone 4.

Hi Anne;  If I understand your post...  you want to build a rmh in your garage ?  If so, is it a trial heater before building in the house ? If not and you want your rmh to be in the garage(not recommended)... understand the commitment you would be making. After they are going, a J tube rmh requires feeding apx every 40 minutes ! So trooping out to your garage would be required...   My wife has a greenhouse/studio outside here in NW montana,  she sets a timer every evening , 40 minutes, then boots and coat on to feed the dragon. In the middle of winter she will do that till 9-10 at nite ... every nite  then no fire in her studio all nite and in the morning when I relight it , it will be a comfy 45-50 inside and 10 degrees outside.  Before building our rmh we burned 12-15 cord in a horrible Victorian coal/wood burner and would get up at any hour of the night to keep it going !  As far as your blaze king idea you might consider both ... For some busy people the convenience of a fire that lasts for hours when they are not home & a rmh to replace/supplement for when they are home is the way to go.   You currently have a propane heat setup, if you left it in place it would provide the backup to rmh.   Food for thought...