3M Filtrete
Provided you keep on top of replacement, even the highest performing Filtrete variants shouldn't pose an issue if your home A/C or Heat was installed properly (I know: Highly unlikely). Besides, past a certain level (Higher than 1200MPR, I recall), the airflow ratings begin to improve until you get to the highest models.
We personally use the 1500MPR Filtrete's and have no issue whatsoever with icing or airflow (perhaps the leaky, bodgy ductwork, in which case a filter is useless), and the house stays so much cleaner in the Summer!
Provided you keep on top of replacement, even the highest performing Filtrete variants shouldn't pose an issue if your home A/C or Heat was installed properly (I know: Highly unlikely). Besides, past a certain level (Higher than 1200MPR, I recall), the airflow ratings begin to improve until you get to the highest models.
We personally use the 1500MPR Filtrete's and have no issue whatsoever with icing or airflow (perhaps the leaky, bodgy ductwork, in which case a filter is useless), and the house stays so much cleaner in the Summer!