If you can stay with a conventional stove, no close neighbors and are not concerned about efficiency then the conventional stove will be less expensive, the gassers are a bit of a different breed and take some getting used to, I have both here on the property and regularly test new models for the company, I will be pulling out my old Wood Doctor conventional today and replacing it with one of our B-L series from P+M, I have run the P+M 250 for 3 years at different shows and it is remarkable but more than likely more money than you want to spend at this point, as a service / troubleshooting tech for the company, the simplicity, cleaner burn and tripple pass heat exchanger of the brick lined units that we have would make you a great choice but you are the guy with the checkbook and will need to determine where you would like to spend your money, look at them all and compare but really LOOK, don't take a salesmans word for it. Have you given up on your old boiler, I PMed Stienacher sales last night to see if he could do anything for you, no response yet but don't give up!