Honestly Jack I don't have an answer... If someone could explain to me why one would be better than the other, or if it even matters then I might come up with semi educated answer instead of openly admitting my lack of real car knowledge by having to answer "I don't have an answer"! I'm a Superintendent with an underground utilities installation company. Site work. Its a fun hustle, you know 80-90 phone calls made and received by noon, Precons, sub-contractor meetings, permits, submittals, GCs, PMs, 5 crews meaning 5 Foremen and 35 operators and laborers who no hable ingles. Sometimes I'm so stretched I feel like I lose track of where I am on jobs and at the end of the day I get a "good job" from the boss....every day is a trip that never seems to end! Oh, and my boss is 10 years my junior but he's sharp as a tack and mean as hell, we make a great team.