I found it very sickly too - so I add half a teaspoon to the same amount of water and that made it drinkable. Orange reminded me of orange/lemon sherbet. Berry is a little bit weird - again, sickly if you make it as directed... but I have no idea what type of berry it's supposed to be!
I haven't had the water flavorings yet as i am only on my first week and i am not allowed them till week 3. But i might try the orange flavor as i like orange, and i guess its just like drinking orange cordial isn't it?? I tryed a sip of my friends summer berry flavor before i started CD and i found it a bit sickly.