When I upgraded the electronics on my boat it was because the Garmin gpsmap 235 which worked as it should but
charts weren't available even after a saved search on eBay. The Raymarine radar was dead when I bought the boat, the 3rd season I decided to replace all of it plus add a mfd at the lower
helm. After some
research I went with Standard Horizon and Si-Tex products, main reason was excellent customer
service, warranties and very competitive priced. I ended up with 3 displays at the bridge, a CP300 and CP500, I run
C-Map charts on both, the 300 pulled in for a very close view. The 500 I use it for a overall view of the river and radar from the Si-Tex MDS 10-5, both have AIS. The 300 is shares data and gets it AIS information from a SH GX-2150, the 500 from a Comar CSB200 transponder. I finally got around to the lower
helm about a year and a half ago, I installed a CP590 and another GX-2150. I installed a terminal to wire the Si-Tex radar into this unit also, if I need the plotter and radar I can run split
screen or use my
iPad with Garmin BlueChart mobile as a plotter. The only original electronics still in use is a Lowrance
depth finder with a repeater at the bridge. I saved a lot by doing the install and data
wiring myself and waiting for bargains when I bought them.