hi guys, i hate to beat a dead horse but, i'm at a depth finder crossroad.i've been given a budget and i have to be dead on with this decision.i have looked at hummingbird and lowrance units both hav minuses and pluses. i need to pick one for the trolling mtr and one for the steering column. i fish a lot of clear water lakes and i'm dying toknow whats on the bottom. i must have gps on both. can i please get some feed back from some one who's gone this route.i promise you i will use it.oh$1000 is my limit