I don't really have a stereophile system, just stock stuff and a small amp and sub. I upgraded from the CMD2 to the CMD4 and I love it. I am a big fan of the rotary controls that are right at your fingertips, don't have to seach through menus to control the bass, treble, or fade. Unit seems pretty solid to me, CD's sound terrific and we hooked an ipod up through the dock to the AUX inputs and it sounds clean. Got it on EBAY for 200 and change, it's great thus far. I have no remotes in the boat, but the HU is right behind the driver, so it's central in the boat.
I very much like it. Jewel?? Not sure as I have a very basic stereo. It's a pretty solid marine HU though, I would probably get another one if mine crapped out. I originally replaced the cmd2 because we had a missing channel, but it turned out to be the amp. Gained IPOD connection though, and I love that.
Looks like the CMD5 has all the upgraded features like bluetooth and MP3, and is that a wireless remote too?? Nice. Looks like a sweet HU for marine use. 225 on ebay, that's what i paid for the cmd4 last year, cmd4 down to 150-180.
Maybe some stereophiles will chime in who may have it on their systems. If you have factory stuff it will probably be great, but I can't comment on higher end equipment.
(Message edited by Flux on March 23, 2007)