Holy cow! I hadn't checked the site out for a while and this is the first thread I read. Evidently the dude didn't realize he was stepping into a Piranha tank of dealers not selling his brand and got the meat on his bones picked clean! Right, his comments were probably a little over exhuberent but it was pretty evident he was pretty pleased with his choice. Got in over his head in a hurry here. Hey there Slim, I've been operating CB's for a long time, an E2400 since 2010...you can read some of my back posts if you need to get up to speed. Maybe we can debate our model options, although I don't have a lot of time to post as I have a day job. Let's start with your comparison of the P&M Optimizer 250 vrs Eclassic 2400. EPA's site shows the PM250 8hr burn time output at 78,252 BTU and .23 particulate output and the CB E2400 at 261,506 BTU with a .12 particulate output. Eclassic 2400 appears to win 3 - 1 in output and lower emissions too. Even the CB E1450 has more output at 120,529 BTU. The E1450 also wins. Price? You stated the Opt250 prices out at $11,500. CB site shows their still larger E1450 at $9,875 with their current rebate. As for all the PM foam insulation bashing, do you really think CB would still be using urethane foam for 30 years if it traps moisture and guarantees failure? Pretty ludicrous claim. I believe failures are caused by not maintaining water treatments if exterior water jacket failures occur. When foam adheres straight to metal or other surface, since it is airtight no moisture can form. Otherwise all the old metal tank water heater sidewalls would have rotted out long ago due to their foam insulation....did not happen. This should be good for starters.