help finding a fish/depth finder

[BIGINNER]

i'm trying to help my father-in-law find a good fishing finder but i have no experience with anything to do with boats.  so i need you guyses help.  we wants a depth finder that will have an option to warn him ahead of time before he hits shallow water,  and it has to be reliable,...
so any sugjustions will be apreciated.  thanks

[bullcanyon]

Lots of good ones out there.  I wouldn't buy one without color. It is just too nice.  Lowrance and humminbird have some nice units.  How much $ you looking to spend?

[BIGINNER]

I have no idea what he is willing to spend.  But i don't think he'll cheap. Out.

[robodad]

I just installed a Humminbird 958c, i chose not to have the down or side imiging cause its only usefull in calm water. It has a gps in it which i think is a must. This unit may be a bit much for him but it really rocks especially with the Navionics chip, now if i could get it to catch fish id be really happy!