Most important lesson I learned here is that most any brand of oil will do so long as it meets the manufacturer's spec. It really dosen't matter for 99 percent of us whether we use Super Tech or Mobil 1 because most cars fall apart in other ways (or we get tired of them) long before the engine is toast.
So there are two ways to do it. Buy the cheapest spec oil or buy the prettiest bottle, catchiest name, and if you are into playing with oil, don't forget the additives as they make for mixing fun.
Also, one can extend their oil change interval in various ways and that is where Mobil 1 would have an advantage over Supertech, but in the long run you may not save any money runing M1 three times as long as Supertech.
Most of us mollycoddle our engines when it comes to oil, prefering an oil that will get us 500,000 miles of engine use vs an oil that would only get us 250,000 miles.