i am looking for a good Hummingbird combo for bow and console. I was thinking that i would like side imaging on both and GPS. I am thinking a 997 SI at console and a 798 SI and bow. Also what are the navionics chips and other extras that you can with graphs

check bps and see if they have a 797c2 (last yrs model now 798) I just got one for 699.95 less 10%. if out of those get the two you are looking at with the navionics already loaded, its cheaper that way. you can buy a cable to tie both to one gps antenna(they will both come with antennas), you can also tie both to one transducer with another cable so you don't have to mount both on the stern. this would be an excellent system to have.