what a tough question. in terms of extreme climate, both would be terrible. i live in the desert; we get sand storms. the stuff goes in your eyes and your mouth, your hair... eugh. right now it's 40f and we have a freeze watch because of the wind. ...man. again, in terms of extreme climate i'd choose neither. yet everyone has said if the ice was in a cup and the sand was on the beach, that's how they'd prefer it. dunno, your question illegal toilet, isn't specific enough for me to formulate an answer.