I am in the market for a new smoker. Had to sell my propane smoker when we moved. We also went from a house to an apartment so I am looking for something easily moveable. In my search, I came upon the MES 30 and 40. I can get the MES 30 at walmart for 180 (that's the model without the window and straight black) or I can get the 40 at sams for 300 (that's with the window, remote, etc.) I am trying to decide which one would be better. I am leaning towards the 40 not only because of the window and other features, but because of the capacity. I like to smoke larger quantities. Is the capacity of the 40 sufficiently more than the 30 to warrant the price? Also, I have been reading reviews and have seen a lot of reviews saying they couldn't get enough smoke out of the unit. I watched some videos on youtube and a couple were saying that the wood wasn't fully combusting, but it looked like they were using chips. Wouldn't the more finely shredded "sawdust" products work better in these units? Also, saw a lot of people use the AMNPS in theirs. Is this generally considered a must? Can you use the cheaper AMNS? And do you have to use their wood products or can you use anything in them? I know that's a lot. Thanks in advance! I will be smoking 3 racks of spareribs and two chuck roasts this weekend in my father in law's propane smoker so I will try to get some pics!