My mom and dad pick favorites?

Okay so, I'm a really normal teenager (F14). I've gotten straight A's all my life, attitude (SOMETIMES if im not in the mood), run track, and do community service work every 2 weeks. I don't ask for money or to go out late with friends. I don't smoke, or drink. I do all the chores around the house because everyone else is too lazy.

Well, Christmas is coming up. At dinner, my mom asked my brother what he wanted. He said a new car (He is 20 and has had 3 cars, nothing wrong with them, he just gets what he wants) and my dad said we'll look into it. They asked me what I wanted and I replied "iphone 7 probably" and they LASH. "We do everything for you and you want and you still don't appreciate us, NO." They are ALWAYS like this. I have an Blu phone right now meanwhile my brother has an iphone 6plus.. Please don't think I'm unappreciative because I am grateful but it's really bothering me how they favorite my older brother. Please help, I can't hold this in

I've tried telling them how I feel but they said i'm selfish and inconsiderate.