Karen, we used three of Voyager's "foam" pillows, each, and while I was "okay" with them, Mark was miserable. Ours are the latex foam, and we are so addicted to them! I do think I'll just take one for each of us, though, and use Mariner's to pile on top. That would open up some luggage space, and several of the things I am taking are pretty light.
And I have to have my lightweight blanket; I'm at the age that I live a high-temperature life.