+1 on the GROM. I don't know if they upgraded it in later years, but the anti-skip in the 1995 CD changer was inadequate. I wired my GROM for hardwired connection from my phone for the best sound, but the sound quality is so good with bluetooth, I just use that and don't even bother plugging through AUX. Pretty low bar for me though since my roof is almost aways off...
Note the GROM has a known issue where the CD track advance button is transmitted back to the bluetooth device fine, but the CD previous track command does not work. I solved this with a $20 bluetooth remote - the phone stays safely in the glovebox. But overall, the GROM to your phone is a massive improvement on the CD changer. Note that the GROM can connect at the back of the stereo head unit, behind the driver's seat, or in the trunk. I'm not sure bluetooth would work as well if it was in the trunk so that's probably only good for USB storage playing. Grom makes different USB storage player and Bluetooth player.
One other note: The Acura CD changer has a slightly different pin-out than the Alpine unit that a lot of folks bought and connected. You need a special adapter cable, otherwise the Alpine unit plugs in fine, but the neutral and right leads are reversed, resulting in normal L channel but a strange sounding right channel (of L-R), so if you think your Right speaker or amp are toast, check that first by playing the radio. Ask my why I know this...