Filters are constructed extremely well. No shortcuts and good material. Filtration should not be any worse than stock filters. According to publications Wix filters down to 25 microns which is same as most others. Would be willing to pay more if that number was lower.
The filtration mash material looks to be very well constructed not to miss any large particles. Seeded extremely well in to steardy end caps. Also has internal support structure that prevents filter from collapsing under pressure.