It really depends on the strain and genetics. A sativa dominant plant will be big and fluffy, while an indica dominant plant will be compact and dense. You may think the "tighter bud is better" because indica is more of a head stone, while sativa is a more uplifting body stone. To make buds dense, simply keep the humidity up, and get an indica strain. I myself like sativa highs better than indica, because it encourages productivity, while indica strains put you on your ass. Hope this helped!