I am a computer science student who makes a living writing freelance on a variety of topics. Here is my sample on the drinks you asked:
My favourite drink is, without a doubt, Coca Cola. Despite being aware of the vast variety of health issues associated with the drink, I still find nothing can beat the ability of Coke to quench even the most stubborn of thirsts. To me, the thing I look forward to after a day out mowing the grass or playing football is opening a cold, glistening can of Coke. I know the bottled Cola is better value for money, but the slight metallic taste in canned Coke just makes it so much nicer, so much more delectable. Not to mention cans can get a lot colder than a bottle could ever even dream of being. People keep trying to get me to stop, citing the ruthless assault Coke performs against my teeth, the rotten effects on my stomach, the leeching of precious minerals from my bones. But I don't care, because Coca Cola is my favourite drink. It has been for years. That will never change, and I will keep drinking it until my teeth fall useless and rejected from my skull.