Quote Originally Posted by minnowtime View Post
Witch unit gives the best Down Image picture the HB 598 or HB 688? Trying to decide which unit to buy. Thanks
The 598ci HD SI gets it's data from the 2 "side pointing" piezoes...and then renders it to look like a DI image...

The 688ci HD DI has a "down pointing" piezo ...dedicated for DI imaging...

A dedicated "down pointing" piezo (688)...will give a better DI image than a "computer generated" DI from SI (598)...

Rickie