You have been asking for a professional opinion. I don't know if I qualify after having spent only 26 years with a major oil company involved in the lubricating oil business blending/ testing/ comparing/analysing/torturing/nursing/developing oils for different application (including engines) in conjunction with major engine manufacturers.
Stick with a well respected mineral based oil brand. Use the recommended grade for the climate you're in, change you oil at or before the engine manufacturers interval recommendations.
Don't switch to synthetic. You don't need it if you follow the above. Don't spend more or more expensive oils, they are not worth it, don't spend a dime on any miracles in a bottles, called additives. Always fully warm the engine. Short trips are killers for the oil. Keep the oil level at the proper level.......and you'll have an happy life.