I was looking at West Marine's site and found a the Garmin 198C, it's a new model and should be available 26 Apr. It looks like a 188C with an improved screen and comes with gps antenna, transducer (not sure which one) and has built-in bluecharts for all the US, cost is $1050. I was considering buying the 188C for $850, the cheapest transducer is $50, and 1 bluechart is $150 for a total of $1050. I'll need a second blue chart for a real total of $1200. Has anyone looked at this? I don't see any downside to getting the 198C but am far from an expert on these critters. Is there something I'm missing?