No this isnt a kinky question...
Is there a major reason why some companies still use foam surrounds around the driver rather than change ro rubber? What are the advantages or disadavantages between the two? I know the last set of home made boomers I made had foam around the cones (25 watt 8 inchers) and i blew the cone right out of the basket. It was funny. But...any thoughts?

1xAxiom ax 1.2 2xPolk Audio R30 2xMordaunt-Short 3.0 H/K AVR 225 Paradigm PDR-10 Sub HTR MX-500