I'm pasting here my letter to VR3 about my issues with the 500CS. They are not perfect but worth the money for sure.
Problems with the bluetooth model:
You cannot look in mp3 folders as you can in the 400 series. The menu jumps right back out before you can select anything.
When in tuner mode on an rds channel, forget changing settings, you must go into another mode to set anything with the select button, it act's
like it does at the search folders level mentioned above, it
exits the menu.
It seems the scrolling text somehow interferes with your attempts and exits.
Setting names and number in the speed dial memory provides no way of editing. If you make a mistake, you're sunk.
The instruction manual needs ore explanations on many of the functions.
The use of examples of the functions differences in application from other similar funtions would help. One example is the descriptions on p.24 5, Automatic Scan and store "A" and "B". What is the difference?
Now for a wish list:
Setting the settings after an install is time consuming and often
unforgiving and confusing. It's particularly difficult for a non techie
person who will simply ignore all the features rather than optimize the settings, so here is a really great solution:
Create a computer program that you can load on a computer that allows you to set all your favorites, speed dial names and numbers and graphically explains the settings, then the user can save their settings to a file and load it on to a jump drive, SD card or cd. When setting up the radio for the first time or for different users there could be a submenu in the radio
the user could go into to load or restore the (profile) settings.
So if you have battery trouble you don't end up at square one, you simply make sure the card cd or drive is in the unit and go into the restore profile mode, find the file and you are up and running again.
If there was another driver that likes rock music that occasionally drives the car, his profile under another name could be on the same media or his own media, and he's up and running with all his settings, and the other persons profile would still be there as needed.
Knowing the bugs I've described another advantage would be to offer firmware upgrades and fixes that also could be downloaded (uploaded) using a recordable media.
I absolutely gave up putting speed dial names and numbers in because the interface is so unforgiving and tedious, and ultimately futile when all data is lost.
You have potentially one of the greatest products out there, if it worked as advertised it would be great enough, with fixes and my suggestions it would be fabulous.
Like I said, I've installed six of these on family members cars so you know how I appreciate them as buggy as they are, but I refuse to install a bluetooth model in my personal vehicle because for me the poor mp3 search interface is a deal breaker. My vr400sdu though buggy actually allows searching folders so I'm sticking with it.