K&N FILTER INQUIERY

Ok..knowing That Fram Oil Filters Are Cheap Crap, I Have Been Using Fram Oil Filters On My Duster, Formula S Cuda, O6 Hemi Ram, And My Parents Dodges. Is This Filter Really Any Better At Anti Drainback? Like I Said B4, I Run 20w50 In My Duster With One Of These Filters And I Have Valvetrain Noise For Two Seconds With No Pressure For Two Seconds When I Start It In The Morning. Then After, The Pressure Is Great. Are K&n's Really That Good Or Are They Hurting Me? Thanks.