I agree it is very annoying that the RNS510 doesn't support SDHC cards!
Annoying things I found:-
- No SDHC
- Very slow copying files from SD to HDD
- Cannot copy from USB to HDD
- Very awkward selection of folder names/structure when copying to HDD ie. it's not easy to copy two SD cards into the same directory structure without specifying folders individually
- Can play DVD video, but cannot play VCD or Divx, or video from SD/USB
- When car is switched off, and SD/USB/HDD music is selected, it doesn't remember where it was at, and starts at the beginning, which suffers the next problem...
- It plays alphabetically the first MP3, in the first directoy on the device. This is REALLY annoying, because even if I make the first file an playlist, it plays the MP3 and not the M3U!. Which means I have to then navigate up the structure to the playlist
However, on a positive note, I've found that the Nav map supplied with my car has speed cameras on it!
As said above, I would agree, that I'd expect better for £1200 extra upon the RCD500! - For that price I could buy a good hi-def media PC with gps and still have change to buy a set of new tyres!