I'm not knocking anybody else's "aftermarket filter" but I think the safest thing you can do when changing your own oil is to use the "factory" oil filter.
That way, if you have any oil related warranty problems the dealer can't say, "But you weren't using genuine D/C parts so that voids the warranty."
Trust me, if they can find any excuse to keep from fixing your car, (for free) they'll use it. So why make it easy for them by using after market parts in critical areas. Just my opinion.