Thanks guys, I think I am going to stay with the PYB, Purolator classic, and 4500 oci. Oil and filter together cost only $16.50. Thanks to all who replied, this site is awesome.
Here is another suggestion: Motorcraft Blend GS-5 SN (5w20 or 5w30). Its just about as cheap ($14 for 5 qts.) as PYB at WallyWorld....and it has had great reports from many BITOG'ers.
Should be able to do 6000K OCI's easily....and used with a Puro Classic or PureOne filter....should make a great combination.
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2003 Ford Focus (2.3L Duratec) / 93K
Mobil 5W20EP / OCI: 10K +/- or 1 year
Filter: Mobil 1EP 102