Martin, if you buy a set of RNSE discs for, say, 2012 you will get a useful map update, and also the new discs will update the operating system. The maps do not change a lot each year, so the 2012 (or 2013) maps will be quite useable. If you do have a lot of cash to spend, then the Mk2 units are nicer, with better screens. You will then need to buy the discs to go with it. However, what you have now with an updated disk will still work well. One word of caution. There are a lot of cheap 'copy' discs available, which do not always seem to work well in the RNS-E. Best if you can find a genuine Audi disc set at a good price from someone who has just upgraded. Good luck.
