Depthfinders with the least reported interference issues?

I have the bluetooth version Terrova 54lb and getting all kinds of interference/noise on the Garmin 73dv(gt22 ducer). Tried all the remedies. I'm looking to purchase new unit and move the 73dv to the console. Can anyone suggest any Garmin models that seem to have the least amount of reported interference issues? I know its impossible to know for sure as it seems to be random across all the models/brands, but atleast would give me a good starting place when purchasing a new unit. Is there anyone with a electric steer motor and a Garmin unit not having any interference issues? How about any of the Lowrance or Humminbird models? Looking to keep it under $750.
Thanks!
Matt