It's almost as if the new Annual Protection has been, purposely and artificially, priced high while XOM rids their inventory of Extended Performance. To the average Joe, the following choices would be overwhelming:
Mobil 1
Mobil 1 Advanced Fuel Economy
Mobil 1 Extended Performance
Mobil 1 High Mileage
Mobil 1 Annual Protection
The Extended Performance (15,000 miles) and Annual Protection (15,000 miles for most people?) are complimentary and I'd put money on Extended Performance going. Also, Walmart had a little fire sale on the Extended Performance today and XOM started a rebate program. Who knows...