I have about convinced myself the image quality is directly proportional to the quality of the transducer you got with the package. The last 688 SI Bird I had produced twice the resolution of my newer and supposedly more powerful Lowrance Gen III but when connected to a different transducer the image high resolution went away. I sold it with the good transducer and threw the old on in the trash. Therefore I am convinced that all transducers are not created equal even of the same brand. Typical of mass produced products. Hit or miss thing.
Sonar on the Lowrance is outstanding however.
Sandies on the bottom in front of Murrel park