WTB DH Mountain Bike

What's up guys. I'm looking to pick up a DH mountain bike. Uses for the bike would be mostly trail riding with my girlfriend an her bike and occasionally hitting some jumps and berms with my buddy's. My 20" eastern won't get the job done for what I'm looking to do. Also just using it to keep active while I'm not racing. I run gncc so biking is a good exercise. As usual I can't just go to walmart an get a cheap bike. I need something that will last and is easy to maneuver.preferable a 26 - 27.5 with medium or large frame. I am 5'9" If you have something for sale or posted. Please message me with a link on here. My price limit is $700 an under. Don't really feel like kickin a couple thousand into something that I'm not going to get 100% into. Let me know what you got!
Thanks!