I've read through a lot of the 30v40 threads, but none have mentioned some of what I'm going to ask (that I saw), so I'm gonna ask here..... When I smoke anything....it's typically for no more than 4 people at once with occasionally +2 adults. Would you see a need to upgrade to the 40 from the 30? What are the added benefits? Drawbacks? Granted, this is all hinging on the black friday sale. If I can't do that, then back to Sam's for the $299 40.