I have a Garmin 93sv/Livescope system for "finding" fish/cover ... and a Lowrance Hook 7 for Down Image, maps, GPS coords/waypoints (but rarely use the DI).
I've gone from the old school b/w 2d units straight to the color DI units, then added Livescope a few years ago. All of those choice changes were made in accordance with changing from strictly casting jigs & minnow dunking, to casting & jig/crank Pushing, to casting & flippin' jigs with Livescope.
That said, what methods you intend to use or add to your current methods may indicate what type of electronics would serve you best.