I've had a Zumo 550 for a while now and I have to say that it's pretty awesome. I don't listen to music on it because I use a Pioneer Inno for that but it does have a good array of useful tools. If I don't have a destination plugged in, I keep it on the screen that shows an odometer, speedometer, fuel odometer and compass direction. Anyway, there is a 'more' button on this screen that gives you access to other meters. One of them is a 'top speed' meter that keeps the highest speed you've been at since last reset. The number I found there was shocking and downright naughty, as in if it had appeared on a radar gun the trooper who read it would have put my license in his shirt pocket and said 'Well, you won't be needing this for a while.'. I know I get aggressive when passing from time to time, but I didn't know I'd been THAT aggressive. It was a good reminder to me that motorcycling can be dangerous and in most cases the rider is the one to blame for his crash because he did something dumb, like exceeding the speed limit by an inexcusable amount. It also reminded me that the Concours is a sportbike at heart and while not on par with today's sport machines, she's got plenty to get you in real trouble plus about 50mph.