I've had four of them and I do a lot of cruising on monohulls and cats in the Great Lakes and the Bahamas. By far, the biggest bang for the buck is the Garmin Legend. If you look around you can get it for about $200. I bought an auto/PC adapter so I could update it. If you ever want to, you can purchase charts for it.

I just came back from Nicaragua and it recognized most of the major highways and towns.

You'll have fun with a better one.

Wyatt