John,
Mate i have both i mainly use my kayak for off shore stuff and the canoe for all the estuary work, if you don't plan to do any ocean fishing i would definayley go for a canoe, but saying that the larger style one are can also be quite heavy, so if you won't to go out by your self could be a little challenging. You could go and see the boys at viking kayaks in brisbane as they are very help with this type of question and when i bought mine they let me go for a test of all there kayaks in there range.