i find KBB burns a bit hotter and lights much easier, which can be good or bad regarding the issue of stability, compared to stubbs, but prefer the end result with stubbs so far. with KBB if i dont pay close enough attention ive had big temperature spikes, but stubbs is usually the opposite, not getting hot enough or not getting up to temp as fast as Id like. I havent noticed any significant difference in terms of how long they last, 5-6 hours on a fuse load in my mini WSM for both it seems. im still trying KBB out to see what quirks I can figure out to get the results i want from it... bought 75 pounds of it this weekend which should help ha.