Open Question: Good treadmill and losing weight?

Ok i know many of you will say i am too young and things but i would like some answers please :) I am 13 and about 5'7-5'8 i am of a muscular build as i do much horse riding yet i am overweight and would like to have nice looking thighs. My parents are thinking about getting a treadmill as my dad is a runner and i do not want to run in the streets in front of my friends Any good treadmills reccommened would be good thanx And any good quick losing weight things would be good aswell and pleasee none of that akai berry and things like it pleaassseee already tried weight watchers and stuff xxx