We had a short question in here some time back that ask the question, have you ever blown up your engine due to an oil failure issue, and about 99 percent said no. Any major oil will work for you. If oil manufacturers were making bad oil, they would be gone shortly. The two oils you are talking about are great. Its like shirts and socks, some folks wont buy this or that because they like their existing brand. Its a choice, PS, neither oil will blow your engine...don't split to many hairs, life is to short.