We bought one about a year ago, I was disappointed in the fact that you had to cut the slab of ribs in half to get them in the cooker....but that's just me being picky.
You can get too much smoke in the meat with one of these units. I can't remember what the recomendation of puck usage was, but it is correct, I tried using my own thoughts as to how much was needed, and it was just like eating a tree. YUCK!
Check the Bradley site....They have a forum that has a guy that sells metal pucks that you use for the last 2 in the hopper so that you get the full burn time out of the wood pucks...pretty good idea!