The Humminbird 587Ci is a really nice unit and goes for around $460. I looked long and hard at it, but cheaped out and bought the 586, but have wished many times I would have sprung the extra $120 or so and got the GPS:o
My logic was that I have a very good handheld gps, but soon found out that one built in the sonar is soooooo much more convenient and easier to read on the bigger screen.
If I win the lotto I would love to have one of those snazzy side imaging units:D
Ham Radio, the original wireless communications
Light travels faster than sound. This is why some people appear bright until you hear them speak!