Stopped into my local Harman dealer last night and ordered a P68. However, I think the wife would prefer the XXV and so I thought I'd ask the most informed folks I know what their thoughts were on these two stoves. Both are of adequate size to heat my 1800 Sq. ft. open floor plan ranch and so am just curious if anyone might have owned both and prefer one over the other. Any thoughts, comments, or suggestions would be greatly appreciated. I have a few days to change my mind as the dealer won't be placing the order for a couple of weeks. Thanks....