FWIW, I just bought a 6-pack of FL-500S filters on eBay for about $30 or so. Not really any cheaper than the local store, but more convenient not to have to go looking for one every time I do an oil change.
And yeah, changing oil on an EB is fun, though I will say the second time went much better. Gotta take ALL of those little covers and doors off!
I also installed one of these, should make it easier and less messy in the future:
http://www.amazon.com/gp/product/B00...00_i00_details
I use Mobil 1 5W30 with the Motorcraft filters.