[Rich]

Raymarine, or others can work.

Keep in mind that the newer Garmin units, while I love them, don't allow you to use Navionics charts any more. Garmin changed their firmware on the units to sort of force you to use the Garmin charts. Garmin does have charts of the lake, but I like the Navionics data, which was at one time derived from Bizer data (I don't know if this was a one time thing or if updates continue to flow from Bizer to Navionics).

In short, find one that physically fits your boat and has the features that you like and need. Keep in mind where your charts and updates will come from. Some don't think about the charts until after they purchase something.