I've been doing a lot of research on radars myself. I plan to buy one this winter also. I've been looking at Furuno's Nav-Net. I want to add the plotter and fishfinder eventually. From what I've read, the 4.4 KW is better not because of the distance it can see, but because of the power. The 4.4kw will pick up smaller items, and differentiate between two close objects. The 2.2 will blur close objects together as one. They also say that the 2.2 will "miss" small objects on very heavy fog because of the low power. Whether this is true or not is another story. I'm planning on looking at the different models at the NY boat show to make my final decision.