Hello, we have just started shopping for a free-standing LP gas stove and are confused about the wide ranges of prices. Our room size is 528 sq ft and is very well insulated. We find stoves any where from $300 (Pro Com) on up to thousands of dollars (Napoleon, Jotul, Mendota, etc. What do you get for the additional cost and are the more expensive stoves worth it? Can you please make a specific brand recommendation? Are there other brands we should consider? Thank you so much!