I do use the 1.5x feature but save that for the podcasts I actually listen to. By reading the transcripts I can "monitor" 3-5 weekly, hour long podcasts in 15 minutes.
As for the card, yes I use an AMEX Platinum but believe Visa Signature and MasterCard World Elite also offer a similar service.
As for the card, yes I use an AMEX Platinum but believe Visa Signature and MasterCard World Elite also offer a similar service.