I have used the 5W-20 for 15,000 miles in 5,000 OCI's. No UOA's done, but noise, mpg, butt dyno all were similar to Mobil 1 and the other brands I have used.
I am not in the "Lucas is snake oil" camp, but IMO unless you get a great deal on it, there are many other oils at least as good (or better) for less.