Depends on your needs and intended use. For pocket carry, an auto is flatter and less likely to print. Some revolvers are better, but not likely to be an issue. I generally carry a Smith CS9 inside waistband. My usual "uniform" is a Columbia fishing shirt and jeans or shorts, depending on season. If I want a backup, or am carrying with shirt tucked in, Seecamp .380, which no one will see print.