I’ve cut open the Napa Silver (1085) and a few Frams (PH16, TG16, and X2 part#?) for Jeep/DC Applications. The Frams had their standard plastic bypass valve, and black or orange ADBV, and except for the X2 model, cardboard endcaps. The Napa silver appeared to have better construction with metal endcaps and decent looking ADBV. The Silver’s bypass valve is some type of phenolic or plastic and metal coil spring, i.e. similar design and materials to the Frams. The media of the Silver appeared similar to the cheaper Frams (typical pleated paper). The Fram X2 had a much different looking filter media with a screen covering the media.
I see no reason to buy one of the Frams over the Napa Silver, unless you want to spend significantly more for the Fram X2’s allegedly better media. BTW, unlike most other after-market filters, the X2 is also rated for 7.5k miles (if that’s important to you).
Also note that oil filters for some applications, especially those used on many GM engines, don’t have bypass valves in the oil filter. My comments regarding bypass valves wouldn’t apply in those cases. Since Napa doesn’t make any of their filters, it’s also possible that some of the features and characteristics of the Napa Silver filter described above may not be correct for filters used in applications other than the Jeep/DC one referenced above.