I take whatever Autozone has in stock.. Motorcraft, Bosch, Fram and go with the Ford recommended 5000 mile interval. Considering that I always change the filter when I change the oil, the filter just isn't on long enough for it to matter much, IMO.
I've stuck to the 5000 mile interval for 13 years.. and with over 160,000 miles, I still have no blow-by; no blue smoke; no oil flouled plugs.
Now certainly you can do better, but just to let everyone know, if you use some common sense, its not worth worrying about.
Also, the times I've seen significant engine wear, it has been due to EXTREME neglect of the oil.. I'm not talking about someone who lets the oil go to 5000 miles or even 10,000 miles, I'm talking about owners who NEVER change the oil or change it every 12,000 miles or less. That's how engines get ruined.