Car stereos with a USB port and an interface for mp3s nearly as good as Rockbox?

[tch]

Hiyas,
Apologies but I couldn't find a better forum to post this in on Rockbox, but I think many fellow Rockbox users would be wanting the same thing as me.

I am looking to put a car stereo in and am struggling to find any with good interfaces for mp3s. I essentially want one that allows you to plug in USB drives/sticks and has a good for finding/selecting mp3s. It also has to have a decent file number limit, which many players don't have.

The best I've found so far is JAVC's KD-AVX44/ADV49 (they are practically the same stereo bar a few minor differences) as discussed here:
http://forum.sounddomain.com/ubbthreads.php?ubb=showflat&Number=1403117&page=0#Post1403117

The biggest negative with the JVC unit is that the mp3 navigation isn't ideal for whilst driving according to the above thread. It's still good but I keep thinking there has to be some better interfaces out there. Also, with the JVC unit the USB ports are connected via a cable (not from a front port on the stereo) but that's minor and the DVD playback is unncessary and even adds to the cost (minor again). It has a 5,000 files per device limit which is also good enough (a lot of car stereos have much lower limits).

I don't want to use any device using Rockbox in the car at all. I just want a stereo with reasonable mp3 navigation from a device holding a lot of mp3s. I don't expect one with an interface or the features half as good as Rockbox, but I'd expect there to be a few better than the JVC unit. What's the next best unit for a car?

Thanks for any info anyone can provide.

[scorche]

The reason you may not have been able to find a better forum to post this is is likely because this is off-topic for these forums, and being a technical forum, we do not have any such "off-topic" place.

[dreamlayers]

Have you considered iPod interfaces?  There are some good ones which allow you to browse music like in the iPod original firmware.  It's also possible that eventually Rockbox will support the serial port and protocol.