I take the happy medium and usually get;
Castrol Oil - Tesco or Asda usually have 4 litres on offer.
BOSCH Oil filter - Euro Car Parts sell fairly cheap.
Ford Fuel filter
https://www.ebay.co.uk/itm/Genuine-F...53.m1438.l2649
or
https://www.ebay.co.uk/itm/FORD-FOCU...53.m1438.l2649
BOSCH Pollen filter - Euro Car Parts sell fairly cheap
But it's all down to personal preference and budget.