im new at dirtbikes help me out here

Do yourself a favor and get a 2-stroke :laugh: . You won't regret it. Depends on how you felt on your KX125, that seems like a suitable bike for you, thats what I had when I was your age. Pretty much any 01 and newer 125 2-stroke will be good. I find them a lot more fun than 4 strokes. If you go 4 stroke you will have to get a bike thats too big for you(probably) to satisfy your needs. So unless you wanna rock a 500 ;) get a 2 stroke.