i canoe a lot...
to be honest, unless you have unlimited budgets, i would recommend something used and inexpensive, preferably fibreglass.
fibreglass handles well, is easy to repair and you aren't going to stress every time you scrape bottom.
if you cruise kijiji, you can find a 16 - 17 footer for under 5 or 6 hundred bucks.
better yet, find a fibreglass one with a hole in it for 200.
it's incredibly easy to fix a fibreglass canoe.
if you can, try to find one with a wooden yoke (the center bar in the middle of the canoe)
the yoke serves two main purposes.
one is to keep the sides of the canoe from compressing with the pressure from the outside water.
but the reason you want a wooden yoke is because it is the point that rests on your neck when you carry the canoe by yourself.
any canoe that i've carried that had an aluminum yoke, i've cursed, as they are not usually put at the balance pivot point and they tend to dig into your neck.
i've rarely seen a canoe without ballasts (covered flotation foam) at the front and back of the canoe.
feel free to ask here or pm me if you have any other concerns...
john