Some people have the Pioneer Avic N1/X1. I hear there is an N2/X2 on its way too. But reviews I've seen and talking on forumsto people who have them it isn't that great in the UK. Poor postcode lookup, some whole towns missing, seems to be 100yards behind where you really are etc.. I just use my IPAQ with the TOMTOM software, works great and a lot cheaper. Plus no real fitting, I can take it in any car I like easily.