Lump burns hotter and faster than bricks, if your happy with kbb stick with it its cheap.
I hate the smell of it, i love the smell of lump, so thats what i use.
in a wsm i use a 2nd fire grate turned 180 degrees, and pack it tight, that said, it still doest burn as long as bricks, but i run dry and hotter than some so i do not have any issues getting my cooks done with 1 load.
Fire & Spice Cook Team
Backwoods Authorized Dealer
Old weber gasser
Uuni pellet fired pizza oven