You're lucky, it's not available here, only the 30 weight.
any SM 5w20 is excellent, has to be to get that certification.
you're getting a group 2+ base stock. i usually bolster my 5w20 oil with 25% synthetic 5w30, to make it even better.
ST 5w20 costs $11.35 for 5 qts. Quaker State $10.50 for a 5 qt jug. Motorcraft Syn blend, my fav in that weight, $11.50, as is PYB.*
Nothing wrong with ST, but just as good or better choices IMO, for less or the same money.