Since you already have a fireplace, obviously you're going to get a fireplace insert. Just make sure the hopper is big enough to get at least a full bag of pellets into it. That way it will run all day and into the night. And if you have the storage space, order a ton of pellets at a time. At the end of the burning season, put in an order for another ton for next year. That way if cost goes up, you've at least got a start on the winter or if they are hard to get for some reason. I put a Breckwell in and I'm very happy with it. Only had one problem in the last 6 or 7 years, and that was the auger motor needed to be replaced. Not very expensive. Have you pellet stove cleaned at the end of the season. Get a good vacuum, with a good filter on it. Recommend a Rigid. Vacuum it out about once every 3 days, empty the cup and clean the windows. About a 10 min job.