Replying to I need help buying a new bike

Ok so I'm a pretty experienced rider, I just don't know shit about buying bikes. I go all the time but that's just it, I bike but know basically nothing about the sport. I'm looking to buy a full suspension xc. I don't know if buying a bike is like buying skis but I weigh 160lb and I'm 6'2 ( I know height matters). If you need any more info just ask. I appreciate all help you can give and since I believe one good favor deserves another +k will be given to serious helpful answers. Oh and I know about pinkbike but I don't feel like searching around on their right now.