I am trying to decide between these two filters to use on three cars belonging to my neighbor and my Girlfriend's dad. I am doing their oil changes every 5000 miles roughly which seems to be every 4 or so months. All three cars use the same filter model so I just wanted to order a pack of about 10 of them. I have a friend who uses pronto filters alongside microguards at his shop where I can get them for a little cheaper than I can buy the Napa proselect. Pretty much 10 filters comes to around $20 in both cases. So which of these two would you use and why?