Quote Originally Posted by bluethunder View Post
I was under the impression that the Lowrance updates were free on the down imaging units but not the si units. If not that will play a pretty big part in my decision. One thing that I am looking at is the TM transducer for a HB is $167 and the Lowrance transducer is $65.
Keep in mind the Humminbird has SONAR and DI in their 500 series ducers. Lowrance only has DI.. hence some of the reasoning for pricing differences.