Me and my friends usually use a combination of fruit juices (orange, pineapple, tropical are the best), soft drinks (lemonade as a base, then ciata is good if you can find it, a bit of ginger ale is good, then lemon/lime soft drinks) and tropical alcohols (malibu, midori, etc) with as much vodka as you want to balance it out, as vodka is pretty neutral.
Cho's first one would probably be the bomb.