The Black looks fairly typical OG Wix. The separate bypass piece I've only seen on Wix labeled Napa Gold OFs. While I would much prefer it to be US made (Gastonia NC), if it is offshored, quality looks decent. Last Napa Gold I c&p'd recently, couldn't find date on it either, but it said made in US.
The white doesn't look bad either. One can see how with the bypass piece, more room in can for element. But, unlike the off shored ProSelect jobber with M&H Wix coil spring, FVP has flat spring. Could be made by M&H in China, or not.
Cost with ready availability and efficiency unknown. I might go out on a limb and say black same as Wix/Napa Gold, still but be speculating.
Thanks for pics.