Any brand name will take good care of him. In that dollar range, Garmin makes the 250 model, it's one step below there color models which shoots the price upward an EXTRA $250. I got mine on E-bay (this model 250) for $200, has speed and temp, as well as alot of other good features.
I do recommend it for us budget fisherman! I'm sure other brands have good equipment in that range. Good luck, let us know what you go with. Feel free to ask if you want more info on mine