It won't matter with either of the cars you've recently acquired.
Neither has an engine that's at all demanding.
Save the few dollar premium that Pennzoil Gold would cost for some other need or want.
More expensive oil rarely means better oil for most engines as most of us use them.
If you're not going to tax the Smitty's, then your engine will in no way benefit from something more costly.
IOW, if the Smitty's has a level of capability that you'll never exceed, then using a more capable oil gains you nothing except a lighter wallet.