The right buckle for you comes down to personal preference. The Tongue Buckle is essentially the same buckle type you will find on a belt. It is adjusted by pulling the strap through the buckle and locking it in place by connecting the tongue through a grommet on the strap. The Pass-Through is composed of two metal plates, one passing through the other to create a secure connection while working at heights. The Quick Connect Buckle is just like a seat-belt in a car. It is very efficient and requires the least amount of effort to make a secure connection.