I have had acceptable result with both. The big key is to get it home and unpacked and into your freezer. I have done things like take a cooler up with some throwaway clothes/boots and bring fish home in the cooler. Make sure you pack all your rod tubes together so it only counts as one piece of luggage for all of you. Lat trip we each did a cooler and then did two overflow waxed boxes. Get a good HARD freeze on your fish and if you have time wrap each piece in newspaper, that helps too.