Richard, we try to stock up once a year at the local Carquest.
They have the annual spring filter and lube special and a guy can really save some money. Oil and air filters and a barrel of Rotella.
Not sure on the quality but I guess we've had good luck. Like batteries, heard most filters are just re-branded from the same factory anyway.
^^^^ This ^^^^
Good prices during annual sale. By enough for a year.
I think I'm getting brand name filters with Car Quest number.