never had much luck with the unis and other twin foam filters. They tend to choke up the airflow. But everyone has opinions. I like the notoil stuff cause it is so easy to clean. Just dont over oil the filter and keep the airbox clean. I concur; I've had troubles in past with twin foam filters choking up airflow, even though I squeezed out excess. I was using UNI filter oil. I'm going to use Ready filters, then throw away and intall new one. I'm done with cleaning filters!