***help with finding a good fishfinder***

Im not to sure of what brand of fishfinder I should get. My budget is $500. This fishfinder is going in the bow. Do I need a structure scan? Im mainly going to fish DVL. Im looking for quality and reliabilty. There's a stock unit on my boat next to the steering wheel. Can someone point me into the right direction please. Thanks

Excellent unit and should work out to within your budget.
Phil (Kane-o) is a cool dude and is honest as they come.
http://fishingnetwork.net/forum4/sho...520c-head-unit

thanks frank but it sold already !! thanks for looking out...