Ive been looking at upgrading my graph in my boat for this season and the new Garmin Striker has really caught my eye, Side and down imaging for 500 bucks, that includes the transducer. Says its a chirp system. Ive seen chirp on the Lowrance elites as well. What is this and what are the disadvantages or chirp units compared to the higher end units( HDS, Onix, ect)
