The Zumo comes with Mapsource for your PC. A hellish program to me, but I have no prior experience either. If you know Maps and Streets I'm told it's not too bad. The Mapsource program it comes with won't connect to the Zumo to up or download routes until you first get the latest Mapsource web update from their site. Then it will work. I thought that odd. The Zumo software is now at 3.20 and you will need to get that also through Web Updater, supplied with the Zumo.
I just added Nav Traffic to the XM subscritpion for $3. My area is not covered, but, Nav Traffic comes with a weather service to give instant weather were you are or any city in the US. You get today's, 5 day forcast, and a doppler image. Great for long distant travel.
You can Blue Tooth to most phones, hear MP3, XM, Audio Books etc. Great to while away the hours on LD rides. At the end of the day just request nearby hotels. You get a list with phone numbers, and with one touch call to check rates and availability, and then navigate to them. I thought that was very good. Of course it also has all the normal PIO's, gas, hotel, resturant etc. The fuel gage function is not to necessary, but if you set it up to coincide with your bikes mileage it will prompt you at a certain amount of miles and with a touch of the screen route you to the nearest gas station. Awesome. I wired mine to switched power. But if you turn the key on to get in the glove box and then off again it will leave the Zumo running. On a normal shut down it will turn itself off in 30 seconds. If you are interfacing with a Autocom intercom you need a special cable if you want the phone to work. The cable is made of unobtainium and cost $83.
Oh yeah, it navigates too.
I mounted mine on the steering stem with the new nut and ball obtained from ????? Good location, does not interfear with a tank bag or the instruments and is symetrical on the bike. A big deal to me.
I think it is an awesome piece of equipment, but have no experience with any other GPS so take it for what it's worth.
Have fun but be advised it is a major distraction while driving.