Hi Tony
Just a quick check, I am guessing the all will fit quite easily on a a 4 gig card including maps for all europe and space for updates POI,s ect.
I will keep the one card for just Sat Nav and have a seperate card for my music, which I already have ready and waiting..
I intend to have one of these of you when I get my unit, which is currently in transit.
Cheers