Ok on the SPIII you can have it display the address numbers as you drive down the road. Is there a way to have the 478 do this? If so how? One more question. If your on a route and you want bitchin Better to talk and tell you where the next turn is. With the SPIII you just push the speak button and she will tell you the next turn. With the 478 is there any way to hear this when you want? It is nice when on the bike to hear a couple times just where your next turn or exit is without having to look at a screen.