Coffee or Energy Drink?

While most people probably drink coffee more than energy drink, I wonder if SG guys prefer coffee or energy drink.
I used to drink only energy drink and not coffee at all due to bitterness. But lately I've been drinking coffee more than energy drink due to amount of sugar added.

I did some research in the past about which one is better and I found that many articles state that Coffee is better due to lower Caffeine amount. But in Thailand (where I live) there seems to have a lawsuit that control the Caffeine level in every energy drink. Every energy drink here have the Caffeine of 50mg, no more or less, while many coffee I see have more than 50mg (at least canned coffee).

So, which one do you prefer? coffee or energy drink?

Bonus