Originally Posted By: 1flyfisher
Are they all the same?
Similar, I'd say Purolator and Wix are neck/neck. Though I haven't used AC Delco before(not a bad brand), it isn't a bad choice either. Sometimes, it's best(IMO) to just open the boxes they are in at the store to just give it the good old eye test. Compare the quality and see what you like. Raise the filter toward the lights in the store as well.
I use K&N myself, but I don't live in a dusty area. There may be a re-usable you can get away with using out there, but with what you describe it's hard to match OEM filtration with a higher flow air filter, which is what most of your 're-usable' air filters are designed/marketed for.
I've 'heard' about Amsoil's air filters, but I don't know if they actually filter as well as their marketing for them say they do. Ask the amsoil dealers that post here if you want.
IMO, you can't go wrong with any that have been discussed except K&N(again because of where you live). Just find out which stores in your area carry which brand, then jot down the part numbers for each brand, and finally look at them each in person. See what you think is the most durable looking, having even pleats and no dried glue etc. Examine the outer rubber gasket around the element for any damage/poor sealing(if you see light between the rubber and the filter element) that way no particles can squeeze around any part of your filter. You want the filter to fit snug in the air box, too. Some aftermarket parts don't 'quite' reach the exact OEM measured spec.
Unfortunately, because of the nature of the 'application' rule you have to find out which parts are the best quality/brand in each case.