Fancy is subjective, but I wouldn't call a burner whose air is fed from the inside fancy. Even if you have a good chimney, but your burner interfaces with the inside air, presuming the house is relatively air-tight (built in the last 15 years), you'll get smoke inside when you use it, especially while the chimney is cold, because there won't be enough draft to pull the smoke out of the house. Where I am it is forbidden to have such burners in a new construction.