I don't trust the build quality or quality controls of oil filters. I see indications of filter failure far more frequently than a randomly defective quart of brand-name motor oil. The latter never happens, the former does.
Currently I have a few Mobil-1 filters. They were inexpensive on Amazon. The cost isn't an issue, I just "believe" (and I could be wrong) that the M1 brand is among the least likely to give me a defect. Defective filters are what I worry about more than minor details of their performance specs.
Cost-wise, I really don't care if I'm buying a filter every oil change vs every 2nd change. They're also easy to change and it's the same amount of work either way.
However, I'm aware of the belief that an extended life filter won't filter as effectively when new, and should therefore be left on for higher miles.
If that's the case, then I should run these filters for 2 OCIs.
However, I refuse to leave such large amounts of old oil in the engine. Therefore, If I do reuse a filter, I will still remove it and drain it.
So it's the same amount of work, I consider the cost negligible, and I'm not an environmentalist. The only reason for me reusing the filter is based on the theory that an EL filter performs better with longer usage.
I haven't really made that decision, I need to look more into the theory.
^
