Lots of really good oils out there. Motorcraaft, Mobil 1, Quaker State, Penzoil, Valvoline and AmsOil all market top-notch products. I prefer full synthetic. Amsoil is in its own sphere when it comes to recommended intervals, and it's one I can't buy in to, it just doesn't make sense with as frequently as I want to change my oil.
I've watched a lot of the comparison videos out there on oil filters. I think the Motorcraft filter is a decent cost/performance filter.
I'm a firm believer in frequent oil changes. Having owned and followed the 3.5L Ecoboosts for years, think the ideal change interval should be about half of what the manufacturer recommends.
The 3.5 Ecoboosts have all kinds of timing chain and phaser issues, they are more or less to be expected. That said, the repair intervals seem to be much longer for the people that change their oil often.