I, on the otherhand, find the sindfinder function of the 120 and 140C very useful (sometimes). Granted, sidefinder does NOT provide depth but it does provide direction (narrow cone) and distance. Being able to point the transducer in different directions (swivel at will), sometimes I can find fish off to the side of my anchored pram..... that can be useful.I've never understood how side view is useful on any fish finder. Never seems to show anything particularly useful.
@Billy - is your Striker 4 the 4cv? I think (barely) the 4cv comes with a much larger transducer - heavyier too.