Whats a good used 200cc or so dirt bike for riding rough terrain for $1500 or so?

alright my MAX is $2000 but for that i want a really really nice bike. i would prefer to spend $1500. i want 200cc or more. and i want decent suspension what company brand year models should i look for. and what sites. craigslist? im a newer rider but cant afford to get multible bike over time. i need it to last. im 17 and weigh 170lbs. and do have lots of balance and im coordinated. so i can handle more power) just list a few models that i should look for.