What's better for teenage guys - straight leg or relaxed fit jeans?

Which one looks better on teenage boys out of straight leg and relaxed fit jeans? Why? If you are a teenager, what kind do you wear and what are advantages and disadvantages. If you're not a teenager, what do you see on most teen boys and what do you think? Thanks this is something I've been trying to decide for a long time and I hope you guys can help me figure it out.