I think sound quality depends on how you like listening to your music IE loud low bass treble etc....
Low tone & not loud then yes CT200 audio is Okish..,
This is my 1st Lexus overall a very nice car but I was very disappointed with the sound system.
I changed all my oem 6 speakers to 6 JBL GT series speakers & still the sound is no good at all.
Over all I’d say the sound has improved by 5-6 %.
I have used the same speakers in other cars & the sound has been great but still v disappointed with the sound.
Audi VW Merc etc have much much better sound systems.
Id just upgrade your head unit put in a 10” JL audio sub & Amp & you would get great sound...