My Colonial is roughly 3000 sf, two full baths with no fancy hot tubs or shower systems. I have baseboard, hot water heat. Four differant plumbers gave four widely differant quotes on four differant units. Some units they've recommended are: Buderas condensing 95% efficient, Burnham 82%, Munchkin 95% and a Weil-McClain unit. Some say the European wall hung units are most economical and enviromentally sound while others say the traditonal units, while less efficient, provide a better burn and require less time and effort to work thus burning less fuel. European wall hung units, I'm told, are best suited towards radiant applications while the "traditional" burners work best with baseboards. All agree that a water storage tank is the best way to go, but all have their favorite manufacturer. What are the facts? What units are reliable? With a car purchase, there are many resources for information. For this type of work, I've found very little. HELP! Thanks!