Couple of thoughts:
Is your power or fuel mileage down? If not, then your air filter is fine. It's SUPPOSED to get dirty. That means it's working. It's also designed to have a lot more flow capacity than your engine needs, so it can get dirty without impeding airflow.
If you go with the 30k interval, you can't justify a 50 dollar air filter that does nothing other than claim it cleans better.
Also, the more an air filter gets stopped up, the more it also filters. Getting dirty doesn't mean that more dirt gets in the engine. And where do you think you're sucking up silicone from?
So again....you have to ask yourself, what am I trying to accomplish here?
Nobody, and I mean NOBODY, has engine problems from a factory-type filter not keeping enough dirt out of the engine. Nor do they have excessive wear from it, either.
Just like nobody has oil-related engine failures, other than from not changing it or using the wrong oil.
Bottom line, it's your money. If you're enamored with the air filter and don't care about costs, try it. It's not going to make one iota of difference, but I doubt it'll hurt, either.