FYI, the cable works fine using EasyGPS- I just set it as a Magellan Meridian and have successfully downloaded/uploaded waypoints and downloaded a track log.
Great news for anyone who has a 200.... but more on topic, if I was buying one now, I too would go for the 210.
I have the 200 and i dont see any place to plug a cable into it. I went from the 200 to the 500 and love it. dont have to enter the waypoints the computer does it all for me. Would buy the 210 or better you will have more fun and less work