Which depth finder Faria, H-bird, Hawkeye, Uniden

I need a new indash (2 1/8 inch opening)depth finder and have looked at these; Faria, Humminbird, Hawkeye, and Uniden. Any input on these manufacturers? Real life experiences?

I had a Teleflex and it read correctly about 25 percent of the time. I changed the transducer location 4 times and it never helped. I have read that the Humminbird HDR 600 had software problems but the new HDR 610 works better. I have read the Faria unit has some type of fluid in the transducer and works great.

Thanks