This video convinced me I'd be happier with either. I've had good experiences with Kinmans in the past so I'm going that route but it seems like either would make a P90 lover happy.Lindy Fralin noise cancelling P-90's my deserve a look. I am thinking about them myself.
https://www.fralinpickups.com/product/p90-hum-cancelling/
Kinmans definitely need a sligtly deeper route for them to fit. Shouldn't be a problem with my Les Paul as the existing P90s are already sitting super high on the guitar. But if you've got a flat top, that might sway you towards the Fralins which seem to be the same depth as the covers and shouldn't need a deeper route as a result.