High-zinc oil or ZDDP oil additives?

What this all amounts to is, What more can $22.00 a qt oil do for me that the Lucas Hot Rod, The Valvoline VR-1,STP additive, Brad Penn, etc,etc,etc hasn't done for the rest of us uninformed? If it works for me and has for a long time, what benefits would I see by spending $176.00 on a oil change? Oh and plus a filter.