So just as important as it is to change your oil with a quality oil on a routine basis, it is just as important to use a quality and long lasting oil filter.
I suppose if you change your oil every 2,000 - 3,000 miles it would matter less, but I use Amsoil Synthetic along with a synthetic Amsoil oil filter which goes the entire year for me up to 15K miles.
When I was growing up, even before I learned to drive, the standard was changing oil every 3000 miles and changing the filter every other oil change. When I started owning my own cars I thought, "Why leave a quart of dirty oil in the car?" and started changing the oil filter with every oil change. I figured that 2 extra oil filters and 2 extra quarts of oil a year would cost me all of another $10 a year. I must have done something right because the 2008 Mercury I bought new had 238,000 miles on it when I put it through the auto auction.
Some people think I was a little extravagant with my oil changes. Thank you for showing me that if I wasn't right, I wasn't wrong either.