HELP! Which boiler should i buy?

If its burning gas it has to have a btu rating. Anyway, Burnham, Weil-McClain are the boilers that I install. They are both well-made, reliable boilers. If you want to get a great system look into condensing high efficiency boilers. Quite a bit more money but way more efficient. Weil-McClain and Burnham offer some great boilers. If your just looking to get the system replaced for less cost as possible than Valliant would be a good boiler. Also, Dunkirk and Buderas also make good boilers.