i just did a comparison of these two garmin's and the cheaper one seems to do the same thing as the more updated version i couldnt find that c530 only this 550 think im gonna go with the other one though im still looking online so help out guys i dont need it for other countries only the us so that helps out some and if it plugs into the cig lighter that is def gonna be useful i sometimes work 10 hr days and i cant afford for it to go down after 8.