Which one should i buy for a guitar?

Im loooking for a guitar ive always wanted never really had the money for one to get it and now i think its time for me to get one i dont wanna spend over no more then 300 dollars for it (i know cheap but its my first one) but yeah im looking to play a lot of Metallica Avenged and other metal based genres or drop d music so if you got any suggestio n let me know