My Choice Would Be "Gripen"
According to Saab, Gripen is built for Canadian weather conditions. "Gripen is designed specifically for operations in the Arctic, giving it a leg up on other planes. Sweden has air force bases in what you call the far North. We operate there daily. Gripen has Arctic DNA built into it,” Per Alriksson says. The Gripen's small size keeps it from carrying heavier payloads (it carries as much as the current CF-18), but otherwise, its performance is very similar, if not superior, to the others. Despite its greater payload capability, the F-35 is limited by its 10 weapon hardpoints, the same as the much smaller Gripen. The Rafale's supercruise performance seems... Optimistic. The Super Hornet really doesn't improve much on the classic CF-18 Hornet as far as performance goes. It does hold more payload and has a lot more advanced gear though. The F-35 does not have a 2 seater variant suitable for training or advanced combat roles (weapons officer, UCAV command