JBL and non-JBL 6-disc CD audio in Toyota Matrix

JBL AM/FM 6-Disc In-Dash CD Changer w/7 Speakers (EJ) AM/FM 6-disc In-Dash CD Changer w/6 Speakers (EV)

Of these two optional audio systems above for the Toyota Matrix, does the more expensive JBL system sound that much better than the other?

Thanks in advance,

Bud H