Considering I drink neither coffee or tea...I would have to say cold if they were the only choices. However I don't like cold beverages either. I hate drinks with ice, or straight from the fridge-I like them room temperature. The feeling of something cold in my mouth really bothers me. Even on hot days, if a drink has come straight from a cooler or the fridge I'll let it get to a more comfortable temperature before consuming it. And in restaurants, I always ask for drinks with no ice.
Oh yeah, on the coffee or tea thing...a mini-list of beverages I don't consume:
Coffee (even decaf)
Tea
Caffeinated sodas
dark coloured sodas (like colas) even if decaf
Anything with sugar that does not occur naturally
Anything with alcohol
I'm likely missing something...but you get the idea 
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"Never injure what cannot die"