I also don't like blowing out paper ones, just bang them on the ground to get the worst of the dust out.

no pod filters? lol

Is that because you can blow a hole through the element?

whats wrong with having a pod filter and what would be its upsides, im thinkign about replacing my air filter too

I have 2 coilies Sierras. My silver daily driver has a Unifilter My Bro did about 100,000km on the unifilter before I bought the car. My white one that was in Tough Tracks has a K&N and I have done about 40,000 with a K&N filter in it.

Construction:
A Sierra Unifilter is made from a removable 2 thick layers of different density foam, wrapped around a steel mesh frame. The seals between filter and air box are made from the same foam as the filter.

A Sierra K&N filter is made from permanently attached 4 thin layers of cotton gauze, held between fine steel mesh molded into a plastic frame. The airbox/filter seals are a pair of moulded ribs in the plastic frame.

Cleaning:
Unifilter takes about 5 minutes to clean with ordinary turpentine, and re-oiling is done with generic (you can buy genuine if you wish) air filter oil.
You can squeeze the dirt and turpentine out of it like a sponge. This is very quick.

K&N takes about 5 hours (1/2 hour working, 4 1/2 hours waiting). First 20 minutes of cleaning with (CAN ONLY USE GENUINE) K&N cleaner and LOW pressure water, then it needs to dry completely before oiling, otherwise the water will repel the oil. This takes 4+ hours even when left in the sun. Then oiling with (CAN ONLY USE GENUINE) K&N oil requires even spraying over the pleats in the guaze. Filter needs to be left for 10 minutes at each application of oil to ensure it works into the cotton. This process needs to be repeated until there is an even "red" application of oil.

Performance:
Unifilter - you will notice even when the outside is covered in dirt, the dirt hardly makes it to the outside of the inner layer of the heavier density foam. It seals itself in the air box via the foam seals very well.

K&N - The cheap seals are useless if your airbox doesn't close properly, and the oil on the inside of the filter still manages to trap dirt to the filters insides. Does this mean some grit gets through the filter?

Cost:
A Sierra Unifilter is $65, and is cheap to service.
A Sierra K&N filter is $110 and I get about 2 1/2 services from a $29 (repco price) recharge kit.

Verdict:
IMO, A Unifilter is better at filtering, more ruggedly constructed, easier to clean, and cheaper to buy and service.

Also, the K&N 1 Million Mile guarantee is void if the filter is used "off-road". In that case it is 12 months only. K&N's main marketing point is no good for the off-road industry IMO.

if you drive anywhere near wet stuff ya really want to keep an airbox

it is amasing what my snorkel pre-cleaner traps