I had a fram on my supra when i purchased it, BHG, then went through two Bosh in a few hundred to make sure any gunk was soaked up, and i've been using a WIX since my last oil change not more than a few months ago.
when visually comparing:
i have to say that the wix looks the best, mainly because when i look inside, it looks better built, and has some sort of spring..
now i say this because the Bosh didnt, and i doubt the fram did(cant remember for sure, but i'm pretty sure it had none). the fram looked like cheapy stuff from the OUTSIDE....and it was significantly SMALLER. i checked the model, i believe it was the correct filter. its just a fram, thats all there is to it.
I figure WIX is better because one-its more expensive, two-i couldnt get it at k-mart. three-it wasnt at kragen four-it has a little spring just inside the opening, and whatever that does, it must be better than the Bosh because the bosh didnt have that. bypass valve maybe? not sure how they work, but its extra parts, extra assembly, (more money) and wouldnt be there unless it was a better quality filter. plus, it was larger than the fram, most likely meaning better filtering surface area.
I cant say which is better beyond that because i have never payed for oil analysis, or cut open my filters to look at the insides. from my observations however, WIX is the best out of the ones i've had.
