Personally and professionally I am researching Boiler preferences from this industry and why. I have used the GlowCore Boiler for 16 years now and have learned alot about what it takes to keep one running properly. If Glowcore was still an option I might still consider them.
It is now time to move on to a new boiler and am looking for unbiased recomendations because it seems every Contractor in town is bringing his own pony to the race and each one tells the horror stories of the other brands.
Quietside, Munchkin, Rheem, Buderus, with 90% AFUE or better. I like the PVC 2" or 3" exhaust.