Fishfinder/gps

I’m going to get a new fishfinder gps color.I’m thinking
Lowrance x510c or x515c.Does anyone have any comments
to share on either of these two finders? I be fishing most at
the Gorge for Lakers and Kokanee. Thanks for any help.

Humminbird 797 and up side scan, GPS, waypoints, real good units. Alittle pricie but all good ones our, got to pay for technology.

Thanks for the reply and the info,but just alittle more
than I can afford now.Think about retiring.