I use Valvoline SynPower 5-40W with WIX or Napa Gold Filters. (Napa Gold Filters are WIX filters)
I have been using nothing but SynPower 5-40W for the last 10 years or so due having a mixed fleet of gas and diesel engines. It's one of the few oils that exceeds all current service requirements of both gas and diesel engines. I also double the normal service interval. Example 5,000 miles becomes 10,000 miles and 50 hours becomes 100 hours between oil changes. The extended service intervals help off sets the higher cost of synthetic.
Only having to buy one oil for all engines sure simplifies servicing all the cars, trucks and tractors around the place.