I personally prefer darker roasts as well, because lighter roasts are more acidic and sour-tasting to me.

To me, medium roasts sit in the best spot. I agree that light roasts can be too sour. The problem I have with dark roasts is that in many cases it means the bean has been nearly charred. That ends up making it taste bitter and overly strong (despite actually having a teeny bit less caffeine).

You're right, I agree and I can't think of anything to add at this time.

I second this.

You might want to try cold brew as well.