Hi, looking at purchasing a Helix 9 G2N and had a few questions in relation to this particular model. Firstly I currently have a 898 HD si model with a transducer that came with it( not sure what model it is) My question is which transducer is going to give me the best results the 898 supplied or the one that comes with the G2N? I thought I read somewhere that the one that came with the 898 was a better model. The other question was I'll soon be travelling to the states and was interested to know if I purchase a U.S model, will my Navionics mapping card work? I know I'll get imperial depths, speeds, temperatures etc , but I can live with that. The reason being that the G2N is $1500 dollars more here in OZ. I know doing this used to be a hassle and frowned upon but would still like to hear the latest opinions. Cheers Stumpy