I have my WP30 installed and I am very pleased with its operation. Holds simple compass coarse very well, but I also want to add a GPS to the setup. I did ask this question on the Hunter midsize boats section, but got only two responses. Each suggested a different unit and I have looked at both as well as others, but I'm still confused over all the choices. I'm really interested in hearing from others what their experiences are with different makes and models. Is color worth the difference in price? Is anyone convinced they made the best choice? Is anyone so unhappy that they feel it is a waste of money? Thought I would pose this on "Ask All Sailors" hoping to get more feed back. Thank you to all responders.