I like furuno's stuff . . . Make's striped bass look like big orange pumpkins!!! I am cheap so I ended up buying a dual frequency 500watt - garmin 250C . . . it works well and I can hold bottom perfectly at 48.7 mph with a transom mount tranducer. Some of the newer garmin chartplotter fishfinder units are nice.
Since you're rich . . . you could always get a forward scanning sonar unit.
http://www.boatersland.com/iscan180.html
or if you can find one.