i have to say i LOVE my Eclipse navi unit. its the original double DIN one, the 5425 or 5435 I think. My installer/friend is really fond of the 5495, since it has a hard drive and dvd drive. So you can have a dvd playing in the drive, and the navi is working off the HDD. the other ones that have seperate DVD and CD like mine, its either navi or dvd, not both without using an external player.
also, the 5495 is nice because the line outputs have been turned up, from 2 volts to i believe 5 volts, so the need for a line driver in the newer ones is not required.