Good points too Mr. Racnruss. There are several differences. Additionally, CB uses spray foam insulation, HM is the fluffy stuff. Not sure if it is fiberglass or bat or what exact material it is, but it's not foam. I don't like foam for several reasons already discussed on this site. HM sits on legs, CB on the frame. I think generally speaking that CB's are more expensive, but there was a guy on here a few weeks ago said he got a 6048 for the exact price I got my 10,000E. But, I don't think that's the norm.
The interesting thing about comparing the CB unit and the HM units, is one guy can like all the things about the CB and dislike all the things about HM, and the next guy be the exact opposite. They both have great features, they just go about it differently! I think the CB units and the HM units have about as polar opposite features about them as any 2 units on the market, but they are both very respectable products! You will just have to list the features and see which one compiles the most likes!