Don't get me wrong, PYB is stout stuff, but if your going to buy oil, Walmart has fantastic prices on the Jugs. Jugs are always cheaper than the quarts. You get get a 5qt jug of MotorCraft for 11.50, PYB for 11.50/12 last I checked. GTX is like 13-14 per 5qt Jug.
The AAP deal isn't bad, but when the deal is over I'd check out the oil Isle at wally world, heck even Kmart has a lot of oil deals going on lately.
The Havoline deal is a nice find, very good oil, especially for the price your getting it at, even PYB. Stock up while its cheap, so you can ride it out when its more expensive.