I have the RL70CRC mounted at the helm on my C36MKII and I love it. The resolution is awesome.. It is orders of magnitude better than the Monochrome. Yes it is bit more expensive but I think it is worth every penny. The added colors make instant recognition of where you are or blip on the radar stand out much more pronouncely and instant recognition is easy. With the monochrome you must stare at the screen and ''analyze'' and think a bit more I have the unit at the helm because I singlehand alot and it makes it easy to just glance at the screen than to run down below or transfer information back and forth of whats out there. When coastal cruising with lots of traffic and hazards it takes the stress level in ''tight'' situations way down and lets you concentrate on other things.