To add to the rest, you're 13 years old...Your hands are not fully developed. Not that this info should be discouraging but that it is a simple consideration in your choice. It's gotta be comfort. If it's speed you seek, a thinner neck might be the ticket. A neck like many Ibanez guitars might be the best deal. However, these tend to be geared towards metal. So it also depends on your style.

I have a Gibson with a thicker (50's profile) neck and a Strat with a thinner, smaller neck. I'm cool with both but it is easier to play the Strat if it's a little extra speed I need.

In reality, there isn't an ideal answer to your question. It depends on you and your style.