I'd say generally the less marketing the better, so that pretty much ruled Security Now out for me.
I haven't listened to any in years as they are big time syncs but probably showing my age - pauldotcom.com was good tech nerding with nice guests(ok, this had/has? a lot of marketing too - but for better stuff IMHO), Eurotrash was very good and Dan Henage reading Bruce Schneier had an excellent hypnotic quality and made a lot of sense.
We are having this discussion in this isc2 community thread also:
Look at page 2 to see the big list of them.
I tried listening to Security Now but it doesn't really resonate with me. As a relative new-comer to the INFOSEC community (>2years), I have found "Cyber Security Interviews" by Doug Brush to be the most informative. It doesn't get particularly technical but rather discusses trends and other big-picture/high-level issues. Mr. Brush also asks each person he interviews for their opinion on how to break into INFOSEC (which is cumulatively a great resource for young people and those transitioning to cyber).
On Paul's Security Weekly, Paul Asodorian also asks people he interviews how they got their start in INFOSEC. He has very informative podcasts and has several that are good for people getting into INFOSEC.
Paul's Security Weekly - that's right the proper name, pauldotcom.com was his website.
All this talk of podcasts made me listen to this one:
Not security per se but loads of GDPR, FISA and cookies to munch on...
The Cyberwire is pretty good, less the adverts involved. Though they are at least relative to the audience.
SANS Internet Storm Centre daily podcast is short and sweet also.
(I've tried to make suggestions to further your options, as a fair few are alreayd mentioned above)