I just popped in to provide some answers to the RR questions. The SD team are working hard we all know it, and they are trying their best I am sure. I do reccommend calling them and they should answer based on what I hear around here. I dont own or use SD since I am cheap and just use what's free! But SD is a great program, with some small flaws. If you dont like, just use something else before you buy it. There is a 30 day demo.
There are a few options for voice navigation with RoadRunner. Like this: http://www.mp3car.com/vbulletin/rr-p...ontrol-rr.html
And for navigation, neither RoadRunner or StreetDeck are navigation programs. They both use other programs and embed them. RoadRunner can use any program. StreetDeck comes with Mappoint. So you can embed something like Google Maps and get satellite overlays, or Mappoint and use Virtual Earth (http://www.microsoft.com/presspass/e...int/msnve.mspx)
iGuidance, Mappoint, Streets & Trips. MapMonkey, TomTom whatever.