Some people choose to construct their BBQ Islands out of cinder blocks and others use steel studs. Both have their merits. If your island has curves in it then cinder block is the way to go. If you are trying to maximize internal storage space, steel studs are the best choice. The main thing to remember is that the spacing of your components is critical to your BBQ island's usefulness. As long as you are purchasing medium to high end cooking components, the spacing of the equipment is probably more important than the actual components. If you can't set a plate down next to your grill, you will be unhappy with the finished product.