It has got to be HB or Lowrance. I like the Hb mainly because I live less than an hour from there facility in Euphala Ala. Service is instant while I wait. lowrance is a 2 week turn around. I have 2 of each on my boat. I have been running both for over 30 yrs. Both are good. The transducer on the stern is for finding fish and the TM ducer is for fishing. Now to find the one that has the features that you need. If you have really good eyes you might see the small screen but you will see more details on the bigger screen. Good luck , lets us know what you decide. Send pics.