That Wix filter you had definitely was old stock. The new Wix oil filters have a silicon advb that is sort of orange in color (you can check the filter when you buy it to see what color the adbv is).
I think that the Wix is a good oil filter, and I used Wix for a while (NAPA Gold and CarQuest Premium are Wix oil filters). There is a local company that now sells Wix air and oil filters (they used to sell Baldwin).
The only problem with the Wix oil filter is that, according to the oil filter tests done here, the Wix does not flow as good as the K&N. The K&N costs a few dollars more, but if it has better oil flow I will use it.
However, if after the conclusion of the oil filter tests, it is discovered that Wix is about the same quality as K&N, I would not hesitate to use Wix again, especially now that I can get the filter locally. It is cheaper than the K&N and appears to be of good construction.