This alternative is a bit more pricey but will really stand by you in questionable conditions. If you get a really decent chart plotter, you're looking at sizable bucks. The JRC 1800 is a colour combo of radar/chart plotter. The radar is great and chart plotter is "average" - not great, not bad.
4000 of these puppies were built then the line was discontinued due to part shortages. In the good old USA, you should be able to find a unit for around $1600 or better; there's still some on the market. You probably aren't familiar with JRC as they don't really advertise in the recreational boating market. JRC has been around since 1910; they invented the megartonic tube (or whatever it is called). JRC is one of the largest radar manufactures in the world, but are better known amongst commercial shipping types.
I visit several forums and people who have had to contact JRC directly for help have been extremely happy with their service support - unusual these days.
http://www.consumersmarine.com/produ...l.cfm?i=160034