Seth,
I use briquettes because they are supposed to last longer, burn more consistent and evenly. I personally feel like they are much easier to work with also. The WSM was also designed to use briquettes so I think that may be a reason so many of us do. I used lump for a while because I hated the smell of KBB and thought all briquettes were like that. But now I only use Weber, Royal Oak Chefs Select, and Royal Oak All Natural. All three of these products are made of wood and natural starch binders, no nasty smell, no horrible tears when the smoke hits the eyes and great taste on my food. I do keep a bag of lump around I like to use it every once and awhile and I really like if for searing those steaks. It does burn hotter than briquettes. But in my WSM 14 where there is limited space for charcoal for long cooks it is always briquettes.