thescreensavers, I use MS Streets & Trips daily,as I'm a chauffeur and found it gets me to where I need be.
It's great, especially if you're not familiar with an area.
However, the receiver that comes bundled with Streets & Trips uses an older SirF 2 chip, which I found annoying.
It would lose the sat signal constantly.
What I did, was to buy the Streets & Trips software without their receiver, then purchased there newer SirF 3 chip receiver from:
http://www.buygpsnow.com/globalsat-bu-3...c-osx-compatible-waas-enabled-455.html
This receiver has 20 channels as opposed to 12, has always connected to 4-6 sats aqnd always got me to my destination.....and when you're looking for an address @ 4am, this baby delivers.