What's your budget? GPS only or Depth Finder GPS combo? For $650 it's hard to beat a Lowrance HD5. It's a great unit. OR for around $2,000-2,200 you can get a Humminbird 997/998 CSI side finding unit. If we meet up Sunday morning I can give you a demo ride with mine, but be fore warned, once you go side finding you won't go back. They are TRUELY AMAZAING. Watch these 3 youtubes of it while your waiting for your boat to make it to town. #3 deals with saltwater applications.
YouTube- Broadcast Yourself. YouTube- Broadcast Yourself. YouTube- Broadcast Yourself.
**Lowrance just came out with thier HD series. Many many bass fishermen are upgrading so there are good deals on the 332,520 etc units used.