buy without the chip and get the chips seperately. there is prob a behind the scenes reason for thier business decision. many years of research and formulating HOW the side imaging works... the guy who did it for humminbird has been working on it for several years.... read about it in on offshore magazine.
I dont think Lowrance wants to put the needed funds or research into side imaging just yet... Eventually they will have to, I think, in order to keep up with the competition.