Pacific Energy
I have to agree with PA Plumber, Pacific Energy makes a really good stove. I will say that I do not know of the stoves that you are talking about so I can't really compare.
I can say that I'm currently heating 1300 sqft, of a drafty (old windows/doors) 30 yr old bungalow with a Vista (small stove of the line-up). The stoves are really efficient (great non-cat afterburn technology).
I've burned 3 cord this year and 50gal of oil, while living in Ontario. Its been a long cold winter this year. We've only had to put the oil on when we go away. @ -30C the stove is nearing its abilities, but again our windows/doors are old and you can literally feel wind in the living room if its really blowing outside.
Having bought the Vista, I can say that I would recommend the Summit (larger fire box). The Vista's fb limits you to 14 -15" wood sideways (you can stuff a 17.5" but its a pain).