I am looking to buy my first Kayak and I am looking at the Old Town
Castine and the Nantucket. I am 6' 195lbs, and I am looking to use
this kayak for overnight trips down rivers and larger creeks. I may do
some larger lakes in the future. I am also looking for a kayak that
will last me several years since I have to plans to upgrade for
several years.

How do these two compare in terms of stability, tracking, storage
space, and any other form of performance? Price does not matter since
I should be able to get either for less than $600. I would also
appreciate it if anyone has anything else that could help me make a
decision.