The Sonata is a base model with the factory stereo. It's ok I guess, sounds world's better than my grandparent's 2011 CRV, that car had the worst stereo. I'd like to upgrade the Sonata's one day though.
I replaced the Camry's deck with a Pioneer and the speakers are PPI. Sounds quite good. Not pro though that's for sure.
The Jeep was bought new by the state of Arizona and is an extreme base model. It didn't even have a tape player, and only had front speakers. Wasn't even wired for rear speakers from the factory. Had mounting holes though. So I put 4 new Rockford Fosgate speakers in it and a Pioneer deck, as well as an under the seat powered Pioneer subwoofer. Sounds way better than stock.