This should open a big can of worms!...... Lol well I think Lowrance has the best value, but I have a relationship with my old Eagle. You need to do some research on what features You are wanting, just a color depth finder/temp would cost much less than $400 but if you are interested in GPS models that allows you to mark spots, along with dept and temp $400 is a accurate price. Down scan and side scan imaging are big now, but remember the ones I looked at would not pick up while moving under 2 - 4mph, so you wouldnt get the benifit of the machine if fishing with a trolling motor, ask before you buy! good luck You may want to do a search in the boat electronics section too