Just thought I'd share a couple of photos. A couple of months back I installed a Clarion M502 marine head unit, which I think is probably the best match I've seen for the Crossfire's dash, aesthetically speaking. It's mechless, with Bluetooth and USB. I find the Bluetooth is really the most useful anyway, since it lets me use the voice control on my phone. The mic on the Clarion could be better, but it's passable.
No issues whatsoever with the install, probably 10-20 minutes top. Now I just need a day off with good weather so I can separate the front and rear speakers