Welcome to this forum, Alkamodaddy. You join a long and growing list of people looking for alternative heat sourcing - you've come to an invaluable resource to start that process.
You will find many many pellet stoves that meet your efficient, safe and reliable criteria. A few questions to ask - do you want to go new, when you 'buy' a dealer's reputation as much as you do a heating appliance, or are you going to try to pick up something used, and 'go it alone'? Are you going to depend on a dealer or an independent stove shop to do your repair and maintenance, or do you plan to go the DIY route, where many of us on this forum derive our satisfaction from self-reliance and maintenance cost control.
You will find members on this forum who are quite passionate, and understandably perhaps somewhat partisan about their pellet stove choices and opinions. You will find forum members who swear by upper end stoves like Quadrafire and Harman, but just as many 'big box' stove owners who do just fine with less expensive stoves, particularly if you are only using your pellet stove for supplemental vs the primary heat source." Some like Ford's, and some like Chevy's....." This forum is a well spring of all types of pellet stove owners who can help you along your way, remembering what it was like when we were 'newbies' to pellet stove ownership.
I would start by researching your local pellet stove dealer, especially if you want to go the new stove route, (some dealers even sell used stoves as well), as the quality of dealer service and support is all over the map. Get a referral from someone who has been a customer to get 'the good bad and the ugly' on dealer knowledge and service. If you can wait until the spring you can often find good spring deals on Craigslist or E-bay to find a used pellet stove, then you can post on here and find someone who owns that type of stove and they can give you the scoop on what to check on before you buy.