Very informative thread. I'll comment about the actual topic.
Bought the ECB last year. My puppy recently chewed it's cord. My only complaint is that the brinkman didn't have temp control. I could not figure out how to keep temps below 300 on the brinkman on a typical sunny ga day of 85 degrees and a 230498540985% humidity, lol. This CB unit has two awesome feature that suits me, temp control and the cord is removable, puppy-proof!
One interesting note, the waterpan on the brinkman sits in the middle in the unit, on the CB, the waterpan sits almost directly on the heat coil. On the brinkman, adding wood chips or larger chunks, is simple to do; Due to the waterpan not sitting directly over the heating coil and has 3 pieces, top middle and bottom. You want access to the meat? Lift off the top. You want access to the chips? Lift off the middle. CB, you have only a small trap door, and the very limited volume due to the low mounting of the waterpan. You simply need to cut the pieces of wood if you chose large chunks.
In conclusion, I think the CB simply works better for me due to the temp control and it's nice that I don't have to worry about the cord every being chewed. If you want to get creative and somehow find a way to lower the current to the brinkman such as buying a three-prong lamp dimmer, the brinkman would be the better unit.
Now any competition BBQ will always frown on these "lazy-Q". The two main problems are the air flow/baffles and the super thin sheet metal.