Cheers morty, forgot to mention im getting the RNS510 for a MK5 Gti, but I assume it will be the same. Just go to find a decent one now.
In my search I have come across different HW versions. HW03 with the Version C firmware upgrade WONT take SDHC cards (over 2GB). HW04 with the upgrade will accept SDHC cards (cards up to 32GB). I take it HW11 will accept SDHC cards with firmware version C as well?
(To avoid confusion for anyone, SDHC is a high capacity SD card, stores over the standard 2GB up to 32GB)